Buried in the Support link up the top is a manual for the old kites that explains what the front- and rear-line connection points do… it mentions what the combinations do with regard to depower and upwindability, etc. I can never remember the details…
Why have less depower? To keep the kite powered :D
Since I got my OR kite with the OR Freeride bar - with the stopper - I’ve gone right off bar systems like Cabrinha that almost completely depower the kite when you let the bar right out… like, when you let it go to spin the bar. With less depower (either kite AoA setting or stopper-limited bar travel) the kite is less inclined to fall out of the sky, remains controllable, and is more “on” all the time.
I don’t know your level, but these days I’m enjoying kites being more powered all the time and not flapping and falling when I let go the bar.
Since nobody else has replied, I’d add some IIRC points:
Gusts - you should control the power with the board - edge hard, drive the kite low and forward (to the edge) of the window. If you can’t, you probably need a smaller kite…
Waves - I think you need a shorter, more on/off depower so you can sheet out, noodle around then BANG you’re back on the power and can whip the kite around, without having to finesse j-u-s-t the right amount of travel.