Is there a way to keep transactions for autodenom under the 5000 bytes size?Auto-denom should cost 0.001 in fees, I'll look into that. It definitely has a cost though (although, it will be really low). A fee of 0.025 means you got hit by the collateral bug (which I'm also looking into).
I am really ok with the fees as long as I am doing it myself like triggering denom manually or after a popup when the process understand it needs a larger tx size (like it happens when sending DRK already).