Thanks for the feedback.
1. For pattern loop playback do you mean when you press Ctrl + Space to play one pattern? It would be useful it that looped the current pattern instead of stopping. I'll change that in the next version. In the mean time, effect F will tell it which pattern to play next so if you want to pattern 1 to loop, put F01 somewhere in pattern 1 and it will keep looping back on itself.
2. You can use the mouse wheel to change values and hold Ctrl to change in larger increments. But yes, mouse drag to change values would be good to add as well seeing as it's something people are more used to.