Even though I haven't been impressed at all with HoW weapons (Messenger/Hopscotch are decent PVP pulse rifles and that's about it), The fact that they're adding more weapons than currently exist in the game is promising. Combined with the whole foundry system, and the ability to improve weapons by sacrificing other weapons (whatever that means) looks like they've overhauled the whole weapon system. TDB and HoW weapons felt like a "quick lets slap a couple of unique weapons together" where as this seems like a more measured, well thought out approach. Proof still remains to be seen of course, but some of the crucible footage so far looks pretty promising. The idea of "building" a weapon up over time seems a lot more interesting than wasting mats chasing a perfect roll