I get 1*10 lose weight, clutter + simpler.
But if your going to the effort + weight of having a front derailler you might as well have 3 gears imo.
I could see the point of compact ie 22+30+38 say to increase clearance.
But losing the weight of an extra chain ring is pointless while losing its benefits .
Also the worst place to have extra weight is on the extremities of the bike ie in the rear wheel.
So by having a compact triple ie 22+30+38 you could probably get away with having 7 or 8 gears on the back 11-30 this should be plenty for most situations and light weight with some clearance.
ie
22-30-38 Front
11-30 rear (8 speed for weight savings)