Reserve funds only if the offer(s) gets taken
This is alternative approach to #1054 in order to increase liquidity on Haveno.

Currently you can't post more offers than the coins you have which resulting very low liquidity on Haveno (also for Bisq).

Letting makers to post offers as much as they want can increase the liquidity for payment methods by 5 times or more. However this can result in spam.

P2P platforms like Localmonero were working like that.