I did some snippets for my own personal use,but i wanted to share them in case someone needs them. Just remember a thing,they are simple edits from default plugins so the compatibility with third party is not asured.
PD: They are free for all uses and please credit to MECH PEN AND LL AERIAN BECAUSE THEY HELPED ME WITH THE BATTLE HUD.
Oh... And about the centerize damage popup,i recommend you to use it alongside Kotonoha ShiftDamagePopup.js. You can get from his site right here: https://aokikotori.com/plugin.html