In order, by numbers:
1. Where is that?
Somewhere amidst Mith'ri'aeil overcrowded settlements, I belive. Or just one of structure slots. Depends on deck, I suppose.
3. Game doesn't work that way
Which way ? It's just random sacrifice by filter and without word «sacrifice». Also, game doesn't work at disallowing further base damage after 1 HP. Or was it called 'Techno Wall' before HD:Xyth arrival ?
Re-check your numeration, btw.^U
4. No way, and biased against CC,MT,RD,AR
Being CC/MT structure ? Well, that was a plan. May be reworked into preference for closest (alied ones) ships, if proven OP.
5. How the hell that is doable?
By coding stuff. Lot's of awesome things is doable by coding stuff. Trust me.
Remark: never seen sources of any HD game, so ask GW for actual details.
6. Again, doesn't work that way.
«Personal» memory for structures ? A reason why I made it unique.
On a serious note, what other games have you played before joining here?
Regarding (i)TCG\(i)CCGs ? Well, let me see... Magic: The Gathering, Yu-Gi-Oh, Eye of Judgment, Berserk (not "The Cataclism" one, though), War Metal: Tyrant, Duel Masters, Etherlords, Spectromancer, Astral tournament, Battle Forge, PoxNora, Carte, Elements: The Game, Mytheria, Armageddon Empires. Something like that.
...Wording layout is mostly from YGO and first sets of MtG, btw.