I think there are mainly three thoughts behind it.
First, to somewhat refresh the current meta around the modules that you will be able to mutate. Less so in terms of pure power and more in terms of fitting options and new tactical options. With a high probability we’ll see people playing around with overprop AB on ships that formerly weren’t able to do so. One important factor, that didn’t immediately came to my mind is also the chance for low SP players to fit “normal” fits they otherwise couldn’t. There are a quite a number of fits that require you to have a certain rigging skill to IV or Advanced Weapon Upgrades to V.
Second, to increase the demand for modules across the board. You’ll likely be able to sell modules that are in the mutaplasmidable item groups for higher prices than before - no matter if they are Meta T1, T2 or Faction. This is simply due to people bricking their stuff when playing around with Mutaplasmids.
Third, to give people the opportunity to get creative. It will require them to dive into their ship fittings and it might pay out for players who are willing to take the step and stop just fitting what they see others do. I personally like this very much, as it will benefit low and high SP, rich and poor players alike who show the necessary inventiveness.
@Slayer_Liberator in order to make a profit from it, there are plenty of opportunities. You can play the market game in many different ways around this expansion. You can run the sites and sell a lot of different things that will drop: BPCs, Filaments and Mutaplasmids. Or you can roll them yourself if you have a good idea what might sell for a decent profit.
If you make a profit or not really depends on you and your decisions. Not everyone who tries, will succeed. People will invest in the wrong stuff or simply underestimate competition. People will underestimate the sites and lose their shiny ships and pods.
Then there will be people who don’t try to make profit, but really just want to enjoy the expansion and play around with the own fits, run the sites for their own demand and so on.
We’ll see all that and more. This is why I really like this expansion: it is for once something that in its entirety is not predictable. And that’s f*cking great. <3 CCP for this.
p.s. and yes Salvos it will of couse be extremely horrible. All your worst fears will come true. Goons will make Quadrillions and jerk off their gold-plated Avatars over how they won again. And the kids will forget what Faction modules are and pirate faction NPCs will retire to a life in peace, because players don’t kill them anymore. People will get laughed at for still having LP or fitting an A-type. It will be hell. Everything will fall apart. RNG Jesus will throw Bob from the throne and a few years after that we’ll mutate not only ships and entire solar systems, but even ISK. Please, we understand, don’t tell it all again.