I think its a limit to 3 accounts on the same server per house and even then only if you inform Evony first.
2 and 3 are something only a rep can really answer.
I played beta and I don't pay, although I know a great many beta testers who did, I think that there's a good mix of the customer base who gave feedback on beta.
For 5 you have a point but I doubt Evony would only do what paying players want just because they pay.
6 is again something only a rep can answer.
and for 7 I totally agree with you.