24/7: Not sure this effect is fixable. The one thing I’d try would be to make it cost 3. You can technically fix it by making it Terminal, but I’m not sure it’s playable, then.
CI: Inf to 12, and even then what needs to happen is a meta shift, where it’s possible to drain the corp of money through Runner action. (Account Siphon, for instance, helped keep this ID from being too broken.) A fun thing to try would be to prevent inclusion of Weyland cards when building this deck. (Sortof combine this and Custom Biotics. This ability is strong enough to make up for the deckbuilding restriction.) In exchange, you lose the ability to combo-kill with meat damage from this ID, and also lose Shipment from Kaguya, another combo piece for the deck.
CSM: Trash itself upon use and/or 0 trash cost. Possibly make it 3 to rez. The effect is very strong.
Moon: Require a Click+Trash to use. (Would try just a Click+clear power counters first to see how that plays out.)
FiHP: RFG itself. (Like holy shit how is that not part of the card…)
Museum: Remove the ‘Alliance’ inf-reduction ability.
Sensie: Variety of options… 0 trash cost, adjust the numbers from 3draw+1bottom to 1+1 or 3+0, must change rez cost to at least 1, probably 2 or 3. I’d look at a combination of these. (I think you can do 1rez/1trash or 2rez/2trash, you just can’t have the wild imbalance of 0rez/2trash.)
Aaron: I’m in the minority that think Aaron is mostly fine. Needs to be 3+ influence, though. Making it draw OR remove tag makes the card too bad to play, btw. After a fashion, Aaron existed to solve Breaking News problems. With BN no longer in the game, Aaron doesn’t actually need to exist as a card. But 2 tokens on score/steal, and draw+tag remove on each token, is Fine. Yes, it hoses Argus and PE, but there’s other cards that do that, too. Conversely, there’s Runner cards that do something on score/steal and all of them that don’t have the word ‘Current’ or ‘Fan Site’ on them are unplayable. (I did see a Spoilers deck at one point which was Amusing, but not good.)
Bloo Moose: I honestly think this effect is Strong, but Fine. We had just started to see counters to it popping up, like Blacklist or more Chronos Project. If you wanted to ‘fix’ it, you’d give it an influence. Ultimately, this card is better for the game than Magnum Opus, because you can’t sit back and just gain money, you have to be playing cards and removing them from the game to get benefit. It encourages more consistent decks by making it so unique 3x aren’t a terrible thing to have.
Faust: Needs to not be able to break all types. A cycle, like the virus breakers, would serve this well. Probably increase to 3 influence.
Hyperdriver: Unique. (My read is that the high MU cost was supposed to imply it was unique, but there’s too many ways of getting around that. Just make it Unique.)
Mars for Martians: One of two things. Either it needs to be Terminal (possibly dropping the draw-cards bit), or it needs to cost some amount besides 0. First pass I’d make it cost 3. (Alternatively, if ‘Clan’ had actually good cards, you could lean harder into the clan bit by giving credit+card for each clan resource and dropping the tag part.)
SVA: Change to
Click: Make a run on R&D. If successful, the Corp trashes X cards from the top of R&D where X is the damage you've suffered this turn.
SIFR: Three influence. Also look into making the cost actually a cost, like discarding a card, instead of just temporarily losing one handsize.
Tapwrm: RFG on virus purge.
Temujin: Either once a turn, or halve the credits. (8 on the card, get 2 back on successful run.) Would also try 12/3 just to test.
Zer0: Change it from damage to discarding a card at random. Functionally the same, but removes CV abuse case. You can also try to make it just discard a card instead of net damage at all, but that ups the synergy with the conspiracy breakers. Also, it should cost 3, or be a Console. (As an aside, I wonder if anyone ever tried Synthetic Blood with Zer0…)