So I saw that you were working on HD art and I think it may be an enticing trap to fall in. The reason being that it's just too time-consuming, the progress will die. Most games with high quality graphics are pretty boring, quite likely because game developers spent all their resources trying to meet the standards of today's graphic expectations and weren't able to put any time aside to actually polish the gameplay aspect of the game.

What we have in version 0.19 already looks good enough imo.