Well, one thing you can do is clean bugs out of your heat exchangers. That is just one thing. Removing the fascia is part of an overall annual PM interval, not the driving force. I take the hood & fascia off once per year to do things like clean & inspect rubber goods, grease boots, electrical grounds & connections, motor mounts, and other things you just can't see with all that plastic in the way.
It's amazing how much more light comes through the car with the nose & hood off. Much easier to work around too.