2D Rendering

I'm still debating on how to do plane rendering. Either 2D rendering or faux DXP rendering. Either way I'm going to need to experiment a bit. So far I have how I want the layering to work, and texture scale.

Currently all textures are 32x32 pixels. There are 6 layers.
[Background] Background texture, generally a very plain tile.
[Detail] The detail tile is used to add rocks, grass, pits, etc.
[Character] Is not GM editable, is only accessed via the Engine, and is used to place the players and NPCs.
[Overlay] Can be used to add extra detail, shadows, or anything else that requires coloring or an overlay detail set.
[Glow] Used to render auras, shields, or anything else that causes visual effects on to of everything.
[Effect] Is not GM editable, is only accessed via the Engine,and is used to render spell effects