It would be nice to enable cursor keys to change param values:
- for integer fields (numerical or drop down)
- for float fields (with predefined stepping, may be function of the field prevision, ALT or SHIFT modifiers to change the stepping)

Usage: left click on the field slider then use cursor keys (left/right or up/down) to modify the values.

This would be very handy to for example browse through variations (i.e. random seed), as using the sliders with the mouse we skip many intermediate values.

Note: using SHIFT + left mouse drag on a slider already enables fine value change, which is cool, however we need to hold mouse button pressed and move the slider at a precise and steady pace. The cursor key implementation would enable to choose our pace and not hold on a particular gesture, which is tirering.