Nice you're getting better at making mapping engines Hblade!
Although you need to not create all 20,000 tiles at once, and condense the entire tile selection menu into the mouse for easier use, make your maps dynamic also save as much space as possible.
Just a couple suggestions off the top of my head!
also tAnim[] reminds me of my arcMappingEngine(The one with the nice isometric rotation in it
) as those were the same name of my tile actors animpos array