While I don't want a cookie cutter of warframe's mod system, as it makes the whole game extremely grindy in the effort to find that one specific rolled riven (basically a item specific super mod, that can be rolled for different stats) which is something I don't see working in destiny. I also don't see destiny doing well with having mods that have the same drastic impacts that warframe mods do to it. HOWEVER, I have to 100% agree that they have a very well made and IMO the best example for the basic concept of mods at least in terms with how their energy system is designed.