On the topic of new armors, a new all class frame that's on the opposite spectrum of STA that provides little to no defensive (EVP / DFP / Resists) bonuses, but rather an offensive package. Could have built in Centurion/Battle, or +xxx ATP and +xx ATA, or a set bonus with some really critical offensive weapons (can be for weapons across all 3 classes). The armor package on Ultima is pretty stale and has been for years. RA / HU it's pretty much STA or bust. HUcaseal has Sue's Coat, but it doesn't really make her any better compared to the classes above her. FO sort of is stuck to STA as well since nuking is quite rare on Ultima and everyone just plays battle FO wearing STA lol.
An armor like this could add a whole new dynamic to Ultima. As a server most of us are used to walking around being ~invincible to all elemental attacks, and even ATP based attacks. This is not typically the case on other versions of PSO where in order to play even "smoothly" you have to be at least mildly aware of your surrounding enemies and in game objects as to not die. An armor of this style could give at least the option (not niche either) for the user to pick between a hyper offensive style of play or a more modest style.