As far as the aiMir and Chinchou bosses, do you have any suggestions to improve them? I think Chinchou is pretty reasonable now thanks to the shield, but I've never been happy with aiMir.
Well, the biggest problem with aiMir is not even aiMir itself - over 90% of deaths are because of collisions with the moon. I deafeated aiMir once, and my tactic was just trying not to fall into moon and dodging aiMir's bullets. I didn't shoot even once - all five hits was actually because of aiMir getting hit by his own bullets

I showed a friend of mine this standalone aiMir fight you posted some time ago - he is doing a game with the same physics as in this fight or KSpaceDuel (but i dont think we will see a release soon

) so you would think it would be easier for him, and it really was - he actually managed to defeat him twice, but stiill it took him over an hour(much quicker than me) and guess what - he achieved it by practically the same tactic. The idea with fighting satellites is really cool, but it is something wrong when the best way to deafeat the boss is letting him commit suicide.
I think the whole fight is a little bit more bearable when you drop "overall game speed" parameter - when it is like 0.7 i managed to hit him two or three times, but in my opinion it still remains quite challenging(well, at the moment i cant beat him, but i really dont feel like trying now).
I dont feel competent to suggest something about chinchou, as i fought him only several times - it is quite time consuming because of this whole fragment before him and that can be a little discouraging. I will try later though.