Please add these increment buttons wherever you need to input a dimension, number of pattern instances, etc. Number of pattern instances should increase and decrease by one per click. Linear and angular dimensions can default to (say) changing by 10mm and 5 degrees per click, and this increment value should be customisable in the options menu.
If you've never used them before, you may not see the appeal. If you have used them before, they are very notable by their absence. So often you want to bump up or down the number of items in a pattern, or just extend or retract something a little, or adjust a constraint offset distance a bit. With Inventor you have to just keep entering numbers manually by trial and error. With other programs that have this feature, you can easily get it right with a few clicks.