Lets also address the elephant in the room - RNG is not a good thing, especially, like a friend of mine reminded me, in a game that is completely based order like EVE.
RNGesus will create really insane ships that break several points of the game. While I am not opposed to the idea of enhancing modules, I’d rather have it in a way, that isn’t completely out of proportion.
Enhancing T2 Mods should at most make these modules be as good as the weakest deadspace items.
And I also think that there should be a maximum number of stats that can get altered by them.
Using a Tier I to Tier III Item should only be ably to slightly enhance one randomly chosen attribute, whith a chance to negatively effect others. So a Best case roll would slightly boost the modules effectiveness while not reducing any other stats. And even for the tier V sites I’d think a maximum of 3 enhanced stats with minimum 1 negative side effect would be way “friendlier” on game balance. A Critical roll in the state it is right now, can too severely break the game in my opinion.
Another way of doing this would be to have a set amount of Different Abyssal Modules, that can be unlocked via a required input and a certain plasmid.
Upgrading a T2 Armor Repairer with an Mid Tier Plasmid would give you one of 15 different versions, while the best plasmid will give you a chance to a loot table of maybe 20 to 25
Most of those on the loot table will probably be bad, between meta 0 and meta 4, some of them good, similar to current faction. And some even slightly better than the current A-Type Reps.
Having a fixed loot table, while still being RNG will at least make it easier to keep track of, and also work with fits on pyfa/eft etc.
There would still be risk and reward involved. Lets say the absolute best rep still requires the input of at least deadspace level items into the slotmachine aswell as the best plasmid.
This would also allow all Abyss Items to still be tradeable on the market, while just adding more variety to the current modules. You could also add new modules onto the mix later on.
Having modules in there that excel at greatly reduced cap/pg or cpu need while not being much different from others would be way easier to balance.
My 2 cents on the whole RNG
Please introduce more structures like the ones in those abyss pockets into the rest of EVE. Those really are interesting.