There are now 3 kinds of account: free account (no payments), silver account (can't see how much it costs) and gold account (costs about 25 Euro per year)
Silver account is marked with silver star. Gold account is marked either with gold star or with green star. Green star means that the player earlier once sent 100 Euro for the game. 100 Eur once per 9 years, which the game exists, is a little more than 10 Euro per year. Looks not too much.
My offer is to remark all gold accounts only with gold star. Then to create a new kind of accoutn, Green account (or Emerald account), which costs 100 Euro per year, marked with green star.
If some players buy such account, may be only 5-6 or even more, this can give 500-600 Euro yearly to the game. It may help to attract a person on short time to make some of game bugs fixed (currently we need, at my look, to fix Replay function and to correct Sorceress). And this even may help to do bugs fixing once every year.
What do you think, green star owners, is it a time to pay again?
This may be a way to help the game. And may be others, who has gold star, will join you.
(*) not for Solo who didn't pay for his green star (nobody knows why he got it)