@Uhrwerk: Since A8 uses an ABT-tree (and since you can turn some knobs to customize it's behaviour), your argument is valid as long as they run no function and especially when you turn off their dynamic flag and such tricks. Have you tried using shaders on the tiles and have you tried to throw in dynamic entities, that move and are animated?

@Espér: It doesn't matter if you create a DK1 or DK2000 clone, the underlying challenges are all the same and it gets even more complex if you want to throw tons of other stuff into it. But, I wish you the best