This one is pretty obvious ::gamble could use some love, not the best location for a lot of flower poker. I think a simple area could work or even just making the NPC's not move like shown below in my 10/10 editing job.
Gear / Weapons:
I think the addition of sacred clay mage and range as well as the weapons with a set effect could mix up the normal gear currently being used. Something between Sag and light sag is needed. Also the jump from cele to roseblood is pretty big.
For the weapons I think being able to combine them with lesser used but expensive items to get them out of the game. This would create like a (i) or something like it version. Also possibly degradable to get them out of game but idk. Having something between sang and sang x would also be nice.
Also adding a decent 1 handed melee would add some diversity to the game of currently only using sovs. These weapons maybe could become degradable to maybe a state that needs to be charged? And possibly untradable.
Angelic Spirit Shield
This one is simple, upgrade to Demonic by welling. Slight improvement and some bonus. Could be untradable or degradable or not doesn't much matter here. Would be fun if it was like a 1/25-50 chance to get.
Actual BIS per style amulets
This one is also pretty self explanatory. The Anguish (or) is pretty much the only thing used. It would be nice to have something a little more dependent on what you wanted to use. I used these as just pictures of 3 different combat styles.
The addition of maybe slightly better stats but no pickup ability.
Button in your POS and others to go to what is for sale so you don't have to exit