I believe
Pheonix Pants would be the better option. Especially if you get them trade bugged.
they dont need to be trade bugged
They seem to be the go-to. Maybe because of how the item scales inside BG?
kind of but there are betters
I'm just going to make a full list of upgrade potential that I can see and you can go from there
HELM: Your helm is fine, unless you want to go for a heavier vers build then there are some roles that can give higher vers. I wouldn't stress about green lens rolls thats sorta min maxing your toon, you can worry about that later
NECK: bis
SHOULDERS: if you can trade glitch you can get the Slime Encrusted Pads, but since this isn't feasible for everyone your best bet would be aurora shoulders from the swords deck with +2 stamina on them, they can roll 3/5
CLOAK: You can get a 2/3 dungeon cloak or just farm cape of the brotherhood. Or stick to the 3/2 one if you want more haste
CHEST: you already got the right idea, get that but purple
BRACERS: same deal as the cloak, dungeon bracers can go 2/3. For your enchant, i'd go with +4 stamina for more survivability
WEAPON: bis
GLOVES: bis would be 28 magefist, but since again thats not rly feasible for everyone you could go with a scaled greenweave gloves of the aurora with +7 stam enchant. If you can't find a pair of these you could also use phoenix gloves with +7 stam. generally for vets you really wanna find a way to use those glove reinforcements
BELT: your belt is fine
LEGS: Phoenix pants are the easiest effective piece to use. If you can get your hands on a pagan britches of the aurora scaled thats even better though. some rolls you'd want with those pants would be 3/6 or 5/5. Throw ironscale leg armor on them for extra survivability. These dont need to be trade glitched and you can just apply ironscale on a high lvl toon
BOOTS: yours are actually pretty much bis other than maybe like bg rare of the adaptable. I would throw earthen vitality, tuskarr vitality, or boar's speed on them over +2 vers. All 3 I listed do the same thing so just figure out which ones cheaper.
RING 1: I'd go for a dungeon ring of the aurora 2/3, then wait for a bg ring of the aurora 1/4. the dungeon ones just aren't very good on casters
RING 2: bis
TRINKET 1: get battle hymnal if you can help it, this is sorta min maxing but the +5 haste can help in team fights.
TRINKET 2: Get one of the champion trinkets. This combod with the battle hymnal would be bis trinkets. However these can be hard to get for some so the +6 mana ones are fine. Might be worth swapping trinkets around with the stam ones situationally.