I have a problematic mouse that tends to double click and so a few time I think I miss clicked because of that. Adding another option such as SPACEBAR would be a nice alternative. To help me hear/feel the beat better I would like some of UI that would help me keep track of the beat and maybe tell me slow, perfect, fast so that I can try to correct my timing. I do like the RhythmHeaven inspired mechanics and I like stacking rocks to the moon and back!