I actually liked the weapon system in defiance or warframe, using mods to turn base weapons and character abilities into custom tools that match your play style. Couldn't stand the random perks in destiny. A weapon you liked using could be near worthless if a subpar weapon in your inventory had better or even half decent perks (pulse rifle with shank burn vs a deal breaker with high caliber rounds and multiple range and stability buffing perks). An armor piece with ability stats you liked could often be paired with perks you didn't (more melee damage to fallen leaders vs faster grenade charge on melee kills). There was no attachment to your gear in destiny beyond cosmetic appeal, all of it ready to be scrapped and replaced without consequence or second thought. The exact opposite of warframe where you constantly upgrade mods and slate weapons to incrementally build up their mod capacity, or defiance where weapons and gear you truly liked could be modded and altered without fear as you upgrade their level to progress with you until you decide to remove the mods and put them on something you deem more worthwhile. I was glad to see the random perks go, but doubted that the mod system would work in a game that seems to focus on limiting the power of a player's character. It would seem that's the case, with mods dropping infrequently with little to offer beyond a slight boost to light level. That's not a mod, it's a power pellet.