We want to release atleast little playable version for you, fans.
Just a thought regarding this:
It might be possible to "kill two birds with one stone". It sounds like you guys are in need of finances, and a few of us want to help get the game playable and see some of the progress that has been made.
My point:
There was another indie game I saw that successfully used a donation-based system for pre-alpha test volunteers: People interested in testing the game in an early state and willing to fill out bug reports were required to donate 'x' dollars or more towards the development of the game. In return, these players were given exclusive access to the game during closed pre-alpha test events, and were eventually compensated with a sum of in-game currency equal to the value of their donation after release.
I know you've mentioned before that you don't want to rely on donations for this project. I'm putting it out there because it's not really a donation as long as the payment is eventually reciprocated in the form of in-game Exchange credit. A 'pay-in-advance' system or... an interest-free loan, if you want to call it that.