Rehashing some old ideas...

[Tyhm]

*img layer -1: I don't suppose we ever got transparency in the pics1.png area such that you could show images BELOW the Tile layer, did we? That'd be nice:
- tile a pit and showimg the pit's contents (moving in paralax, kinda like in Zelda3) instead of a black void,
- tile a mountain rising to the sky and instead of houseroof blue with imgs of clouds, show a panorama that moves with the player, like in the old sidescrollers
- tile a house with a less-than-perfectly-square roof and, instead of having a Corner For Grass, a Corner For Snow, a Corner For Dirt, just have a corner on which the backdrop is transparent and teach an NPC (maybe even a system NPC) to showimg a 16x16 tile of grass behind it...so it uses one tile instead of 4. Apply this also to fences, Bomy statues, graves...

There were more, I'm sure of it...just getting writer's block...