Suggestion

Although this is a great game as such, I'd really like to see blocks of different materials.

Imagine how a heavy block of steel or concrete squeezes the lighter blocks, or a rubber block giving in to the pressure and bouncing all over the level. These blocks could be distinguished with different textures.

Some people would probably like to stick with the basic blocks, so this could be an option which you could enable or disable (for normal and ultra mode).

Does this sound ridiculous? Let's hear you comments.

[Calastigro]

i like that.  it'd make things more interesting.