Thanks for taking the time to try out the game! I'm glad you found it to be fun.
Being able to drop the blocks anywhere was actually something I had in mind for a long time, but I think I didn't bother implementing it because there are still cases where you would need to let the blocks descend slowly to do a clear (similar to how you can't hard drop in Tetris to perform a T-Spin). In hindsight, I probably should have added it in anyways and bound it to the up key. I guess that's what sequels are for ¯\_(ツ)_/¯