You still could.
You just need more modules dedicated to killing above your size or tech level.
And of course you can adapt the formula, like (2×tech_level-1)×size. Or 2×size +tech_level -2. THIS was an example, and not an exaggeration.
What’s more, this would be a good reason to give combat inty a +1 bonus to warp scrambler and disruptor strength, and a +2 scrambler strength to recon (same as maulus navy).
still killing solo pvp in any way → bad idea !
THIS is an exaggeration.
any form of warp strenght for any ships kills pvp ! its a reason there are only a few ships with bases warp core strengh
Whatever.
CCP tried this.
They increased the HP that Bulkheads, Armor Plates, and Large Shield Extenders give.
It did not work. 
So, they likely concluded that buff is going to probably be the last thing and now are focusing attention on the upcoming expansion.
So I had been going over your zkill history and for some reason your pilot is a lot like my pilot and wanted to ask you do you mind if e one day fleet up together and lose a few faction battleships together?
I feel that your stats could use some battleship love.
Light Tackle specialist checking in:
Hell NO. Adding FOUR points of warp core strength to battleships will make them essentially impossible to catch in lowsec and will require interdictors in null/J.
Going into scram range of a Battleship with an interceptor is already a high risk manoeuvre. If the Battleship is properly fit and flown, it’s near suicidal. Marauders and their mjd makes it almost mandatory to go into scram range to hold them down.
Battleships already have a ton of tools available to make tackle pilots sad. They don’t need inbuilt warp core strength.
Been awhile since I did PVP. I miss proving grounds a bit. SF fleet is fun if I ever bother to go back. I have no small ships trained lol.
This does not appear to me as a problem. I’m not concerned with small ships taking risks engaging a bigger one.
Maybe T1 frigs should not be able to engage pin down a BS without appropriate support ? Maybe AF and combat intys should only be able to scram them temporarily, typically to stop a MJD, while HACs could tank them a bit more, and gal recon could tank them from afar ? While other BS could correctly hold them down ?
And it’s not much, compared to a super’s. Or even to a venture’s in the present state of BS.
IMO the real problem is that it would not help them fleet encounters. Which, it seems, is the real issue.
What is your take on the problem ?
Adding warp core strength to ships is not the answer to your apparent problem. I’ll be honest, I’m not 100% sure what the problem actually is here beyond the cost of isogen.
From my experience as a light tackle pilot, catching and holding a Battleship long enough for backup and heavy tackle to land is hard enough as it is. If you go adding +4 warp strength to battleships, you’re basically forcing me to fit 2x Scrams to my interceptor, Garmur, Dramiel or ramjag, at least one of which must be a faction model. Going into scram range is dangerous enough as it is. Catching a Battleship in lowsec would be nigh impossible, especially with this bonehead concept that a scram should only shutoff an mjd if you reach the warp core strength threshold as well.
In big null bloc fights, it’s an n+1 alpha damage race. Whoever can cull the incoming damage down to a level where reps can hold first, wins.
Warp core strength is useless on such fights as you’re usually volleyed clean off the field or are sitting in bubbles.
In mid sized fleet fights, especially in lowsec, all the battleships (and the bcs, cruisers and anything bigger than a destroyer if I’m reading this idea correctly) could simply warp off as soon as they start taking damage, rep up and come back. Tackle would be nigh impossible to hold on more than a couple of enemy ships.
Nullsec ratting would be Dominix’s Online.
Right now, you can only fit one warp core stab to a ship, it’s an active module and it comes with some severe drawbacks. This was implemented after Ishtars were fitting two of the old style ones and simply moonwalking out of tackle.
You want to give battleships two +2 passive stabs with no drawback?
NO. Just, no. Adding warp core strength to ships just isn’t good for anyone. I can accept it on Ventures and grudgingly accept it on Deep Space Transports, but nothing else tyvm.
your also not solving a problem with your idea to add warp core strength to evers ship …
this would just kill so many tipes of small gang pvp cause you need in worst case 6 times more tackle if you wanna kill 1 ship ! this is just rediculus
nobody know this at 100% ! but its more realistic that BS are to slow infight and to slow at travaling and then you didnt even track your enemy fleet cause they fly HAC´s or something else !
if they would remove the different warp speeds then maybe could it rechange to more battleship fights.
but the only bonus you get from a BS hull atm is the enormus EHP that you never could reach in a smaller ship. but EHP doesnt care if you cant hit your enemy
supers and titans have it aswell but they are another story 
The problem is your arguing common sense pvp balance with a bunch of sub 200 kill hs players, I am also a ceptor bro and also think this whole thread is dumb.
Ships are expensive atm because Isogen is a bottle neck that CCP said they want to control prices with. Working as intended
Whatever.
I thought CCP announced they were monitoring the prices and worried about them ?
Guys.
CCP added stats to all battleships.
It did not lower the price.
You really have no clue how industry works, do you?
Only if you have no neuts as suck at pvp.
Now go tackle a bhaalgorn in your frigate and tell me how it went
If you’re solo roaming in a Battleship and haven’t planned a reliable method for dealing with the inevitable tackle frigates, that’s on you.
Please educate us Mr Indy expert.
Lots of folk use Alts to post on forums, so zkill isn’t a particularly reliable indicator of someone’s pvp prowess around here.
That said, the suggestions being made are a very reliable indicator of their pvp knowledge. Most in this thread appear to have little to none.
I live in j-space. So i rarely, if ever, encounter such things. Hence why i forgot to mention those.
That said, i don’t have a big problem with supercaps having built in stabs. Just so long as they’re never added to regular capitals.