Why don't you just use spriter.....
Sorry to be blunt, but using tilemaps for characters is the worst idea for character design.
Tilemaps don't have an angle property because it just doesn't make sense having one.
Tilemaps are for maps, and that's period.
Spriter C2 Blog :
Because spriter makes animations only. What my idea is that a player can build their character in real time while controlling the character.
Say you have a block as the core of your ship and you want to add other blocks onto that ship from parts just laying around. You would have to make hundreds of animations for every possible way you could build your ship and then each block has to have it's own Health value. So with a whole sprite you can't say oh this block or that block was hit you can only do the sprite as a whole.
I know and I'm well aware what the purpose of tilemaps are but why can't I use it for character design when it would save tons of development time and make for a better user experience. Other wise I have to scrap my idea of being able to build in real time for a model sprite system which isn't my idea. All I'm asking for is a rotate Tilemap to position command which shouldn't be to hard.