Between enhancing weapons and the new weapon mods like the ballistic mod, I feel like there is not a whole lot of reason to get adept weapons. In the past, adept weapons offered +2 to all stats plus adept mods which added +10 to 1 stat, but with enhancing, most weapons now have the +2 to all stats and the new mods add +6 to 2 stats. So I feel that adding grip and stock options to adepts would be a great way to justify the difficulty in getting adepts without making them drastically stronger than the base weapon since these perks typically only add +5-10 to handling or stability. I feel this is completely do able on bungies end, given that comp weapons have grip and stock options and adept weapons are separated from the base version in the api, meaning that they are technically a different weapon and can have different perks if bungie wanted.