I understand that, and totally want the game to progress, and to be honest I'm torn.
I'm pretty well invested, and liek you I've bought things I rarely use (looking at you supercarrier and mosquito) - I've put more cash and more impotrtantly time into this one game than any other. But after reading reports of the money being siphoned out into one of the owners other "interests" as buisiness loans, I'm hesitant to push more money that way unless its something I really want. I don't know how true it is about the loans, but the fact ED haven't addressed that makes me think it is true.
I'm still putting in time investment, and that hasn't just been flying - I've actually spent more time over the last 2+ years learning to script and developing my own PVE playground than actual time flying. If you see "LittleWars" on the server list, feel free to jump in and say hi - it's like Air Land Battle but for DCS.
All that said, if they make and show continual and tangible progress on the AI, then they'll have me purchasing again like I used to.