Coming from a user of a numerous years - I've always felt moving blocks was a little clunky at times, having to drag a block to a grid. It is nearly impossible to do with a touchscreen and several blocks interfere when hovering overtop. It would be nice if it was programmed for a click to select and replace at second click location rather than click-and-drag. Or is there something else I'm missing..

Just stirring the pot a bit,

Adam