I am a bit less concerned with my weapons, but more for my armor that I have spent years collecting to get the stat splits that I wanted. Now, its basically starting over (until we see what the old armor is like in the new system). Since they are getting rid of resilience and recovery, are all of my high stat armors in those stat splits going to even be usable? Are exotics going to be needed to be farmed again to get stats where we want in the new system?
My vault is constantly at 699 as well, and honestly, it makes me want to farm gear less. Because it means that I need to delete things that either are a good weapon/armor, or ones that I hold for a memento from the era which they were earned.
I feel that this reset may be enough to push me out of the game. I spent years grinding to get what I have, and now its basically a reset of everything... Why not a new game instead???!!! Just leave this as it was after the wrap up of the light/dark saga, and move the new system to a new game. I still want to play things in the old system, with my old builds and armor.
Weapons for the most part, I think can be more easily substituted unless you need a very specific roll for synergy of a build. I got rid of so many of my favorite weapons after sunsetting, and we have already had a couple powercreep cycles with introduction of origin traits, then enhancement... that most of those old weapons are more or less obsolete (not best in slot tool for the task). The current adept loot, I expect will still be usable and good. Probably slot in around tier 3-4.
"Why not a new game instead???!!!" It is a new game, just on the cheap. D3 using the same engine with all the destinations, with "soft sun-setting" and more grind. Fingers are crossed, but I think Sony bought a dying game/company due to mismanagement.
Yes, it basically is a new game... but effectively removing the old one and the old systems while they are at it. So, if you don't like the new systems, you have nothing to go back to.