Restricting those cards to 2-of-total makes no sense, I'm afraid. Scorched Earth only works in multiples in most decks, so you're killing a lot of Flatline lists, as well as taking a hammer to FA. SanSan and Biotic were made for each other. Also, in restricting SanSan, I feel like you'd be making Whizzard worse, which just saddens some part of me deeply.
I'd also say that Account Siphon isn't the real issue (if there is one), and the decks that need Parasite need Parasite. Noise in particular, but Anarchs in general, too. Just because it's used elsewhere, doesn't mean they don't want it badly.
The banlist makes Anarch more or less unplayable, and I disagree heavily with it. Kind of wondering if it's a case of Poe's law, to be honest.
FA is irritating, but done in by multi-access on centrals. The proposed bans kill (or at least maim) all NBN decks (except maybe Glacier/Tagstorm), NEXT Design, ETF FA, and Cerebral Imaging.
Multi-access... doesn't make the battle for remotes less likely, in my opinion, but sure, let's take the legs out from under most decks in general, and make Weyland and HB the top corps.
Caprice isn't half so bad as people say. She's a massive irritant, I'll agree, I've lost more than one game as runner on her account, but there are already ways of dealing with her, and if you tax the corp their choices become limited.
AD is just a stupid card. CI can make it work, sometimes, but it's still a stupid card and not very good most of the time.
Datasucker removal murders Anarch breakers entirely. Mimic and Yog are both out, so I hope they only wanted Knight and Corroder/Morning Star anyway. (Force of Nature, I guess?)
Desperado, I'll confess, is the one card I'd ban if someone held a gun to my head and made me pick. I'd rather it was "the first time your make a successful run" but that'd break it utterly.
Banning Kate and ETF outright is an interesting choice. I'm curious how Red Coats doesn't suffer without the identity it functions best with. I'm also curious what the point of the list is, if you want to take out FA and Glacier archetypes.
Going back to the more sane restrictions list, a total of 3-of would make more sense and break things less. I'd still call it unnecessary, as Arkhon said there isn't anything game-breaking just yet. NBN FA is "the best", but it's easy enough to plug in anti-FA tech, I feel like, and it's getting to be less overwhelmingly viable.
(I spent too much time responding to this, didn't I? Yes, I did. Oh well.)
EDIT: I think a better way of dealing with the Account Siphon mess, if one must, is to give Jinteki and HB means to punish tags. Not even to the same extent as the others, or in the same way (a tag-punishing asset seems pretty doable), but that'd seal off a big chunk of the AS danger that I still am unsure is wholly necessary.