A1 Suggestions - Waterfall Autotiles
At a glance, all those fluid based tiles greatly expand on flesh-like dungeons, caves etc. Though at a further glance, I can't help but feel that it's technically missing a 'watertile' auto-tile functionality, in relation to each fluid within the set as is. Under missed potential for 'vertical' fluids, that could be given an organic twist, in support to the A5 Wall tileset.
At a minimum effort, it could be a matter of making waterfall effects go in sync with each supported body fluid/colour. Though at a creative stretch, I feel you could have potential fun if you focused on singular fluid dripping. Possibly as a style, or a seperate 'actor' to represent droplets as an alternative suggestion instead?
Either way, felt that out of an entire tileset, the "top corner" autotiles could be use for limited 'decoration' for the first A1 Autotile. Could be potential useful 'bile', or 'pus' barriers that could be organically decorated throughout a flesh-map, if going auto-tile?
A2 Additions?
Past A1 tile suggestions. As a potential suggestion for a 'clear' addition, you could include a translarent, or "saliva" based fluid as an autotile at this part, if not animated in the A1 tileset.
Outside of that. Possibly some transparent auto-tiles for different coloured 'blood' or 'nerve' veins, instead of just white biological webbing? Or alternatively, "honey/syrup" based liquid for auto-tiling. Before I cover all other possible biological processes that could be fun, 'pus' wise.
And one more thing, I noticed as a bit of a potential issue, from the RTP file itself;l
Very subtle criticism - "A5 Walls"
I noticed that the A5 Flesh Cave's Wall Tile has a very subtle, if a bit glaring "line" over some/most of the buds, wall wise. My guess is probably a not pitch perfect edit during development, or if it's potentially an intentional quirk of art design. Regardless, an easy fix could be to 'blur' that line.
