SimpleTweaksPlugin VS EasyEyes

https://github.com/Caraxi/SimpleTweaksPlugin and it only lists a few.

SimpleTweaks includes many useful features. Of note is one that allows you to reposition and increase the size of the character bark dialogue boxes during fights. The Large Cooldown Counter would probably be of use to you also.

There is if you use FFXIVQuicklauncher and add the plugin Simple Tweaks and enable Legacy Camera Lock. Technically it's against ToS, so use at your own risk, just don't talk about it in game and you're fine, just like a parser

this is just one addon, but SimpleTweaks enables all of these features, and more https://github.com/Caraxi/SimpleTweaksPlugin

Secondly, Easyeyes is another tool useful for filtering what fx you see and don't see. Unfortunately I believe you need to actually see the fx for the easiest way to disable it, so it would be very awkward to do on the fly, but it still may be of some use to you.

There is a plugin called EasyEyes for FFXIVQuickLauncher that is able to remove VFXs ( the flashes and animations ) on demand, maybe she can use to filter those?