I.e., have a “you will be forced to maintain this wattage” setting.
I watch TV while I free ride or, more commonly, do a pace partner ride. So I’m not always looking at Zwift and I occasionally let my power drop a bit too much and I fall out of the blob. It’d be great to be able to set a minimum watts or W/kg so that I am forced to maintain at least the same effort as the pace partner. I’d be able to generate more power, e.g. on climbs, but wouldn’t be able to do less than the minimum I set.
(Or for extra credit, implement a 0 gradient minimum and have that minimum scale with current gradient being ridden. E.g. I’d set 200W and then if I’m riding up a 5% gradient it would scale to 240 or something, and if I’m on a -5% it’d scale down 160W).