Not sure a generic perk would work...I still like the raid weapons for the raids(I use VoC pretty much all the way in VOG, but like my Crypt Dweller with Firefly/Explosive Rounds for CE). I'd probably say allow the option at upgrade to change the perk and then you either have to A) Waste a major upgrade material to change it back or B) Carry a second gun (upgraded or not), but B also would only really matter as long as "old" content stays relevant in some way. Right now VoG is still used for gearing to a degree(armor not so much but ppl love those guns...I'm looking at you Fatebringer), but once we move farther away, then those guns are going to fall off the scale(unless upgrades are put in)...if they put a weapon upgrade system in place, then old content is not as useless...guns can be upgraded so people will still run things like VoG even when the gun caps at 300(before upgrade) but even using that HoW dmg, VoG and CE will cap the dmg based on level. This would also help to keep older content in the loop...just because day 1 players may be sick of things like VoG, don't mean everyone is...and over time new blood will also be apart of the game, so having a reason to do the old raids is always nice. Gotta admit, I hope Bungie gets this part right, I don't mind the loss of old items when new content comes along(10 year WoW player), but I do like some of my guns I have, and not having to see them get dismantled would be awesome. They need to look at doing something with armor as well...maybe a simple transmorg idea to change your look(or do an upgrade to old gear as well maybe...)