4) What is your attitude to possible integration of all Vanilla ship components into the hull root? This means that Vanilla ships will have only one component, like all new ships, and will take same splash/missile damage.
No. I kinda like seeing stuff fly off ships when I shoot them.
6) What do you think about complete disabling of NPC shield and hull repairs? Decrease of NPC ship strength will be compensated with better shields and reinforced hull where necessary.
Keep it as is; more challenging that way.
9) What do you think about removing Campaign SP compatibility from Discovery (not Open SP compatibility)?
No. I like the extra ships, and with NPCs healing themselves, it adds more of a challenge.
12) What should be done about Nova cannon and other bomber weaponry?
Keep it all. Of course, I would like to see the Nova cannon's speed increased.