Here's an idea I had the other day...
You select a clip of midi that you just recorded. Hit a key on your keyboard (let's say 'q'). Then very similar to the menu you currently get if you click the scroll wheel, you get 1/16, 1/8, 1/4, 1/2, Whole. Click one and that clip is now quantized to that amount. Throw in a more button or something for when you need to go into the full quantize menu and select dotted or triplet amounts or select specific settings for quantizing.
This would save me an immense amount of time.