These are completed fixes. What else is important?
I think it's definitely worth waiting for Reunion Menu Overhaul to be released and tested.
If you have time, you should take a look at Kaldarasha's reworked German flevel, if you haven't already. Even if you don't speak German it's worth seeing a couple things: the resized field models are noticeable. Also, the Kalm flashback features "a unique young Cloud model". I have not tested the flashback. I assume it's the short one with Tifa? These are things that can be done to the English version np, but it will make it easy on everyone if Kaldy can just batch out the process with a new version of Makou Reactor that has mass import.
Also there are more Unshaded models coming and a handful of new animations for a few battle models.
I think the reworked
HQBarretRedux (not the cmh175 version with the earring) might replace the Asmodean refaced HQBarret from last version. The one from boot40 has a bad animation. The one linked is the same as the one from 40 but the animation is repaired.
The issue with the Avalanche GUI not being compatible with Menu Overhaul anymore is important, I think. Omitting the GUi from the boot process mostly solves the problem but the safe way to do it is to cancel the GUI install once it's begun. Bootleg 40 with Avalanche GUI installed with it includes way too many files in the menu/mods folder and they conflict with the ones installed by MO. The result is subtle glitches that most people don't realize are incorrect. The menu system is cleaner and crisper without the avalanche GUI.
The repair for the SHINE animations of the Team Avalanche materia field models is worth doing, too, I think.
I'll try to remember some more things.
Edit: I think there are some old World Map textures that were done that got lost somewhere in the ether. They were done by Grimmy... I can't find them anymore. If memory serves certain ones were far better than what we're using... like his chocobo ranch. I suppose I could be remembering wrong but I just thought I'd ask since PB seems to be around a bit atm.
I'd also like an option for the old Romeo14 materias, not the AC ones, but the nice ones that were originally included with the Avalanche Hi res, iirc. They were really slick but DLPB retired them for some reason. Maybe there was an incompatibility idk if that's doable.
One thing that drives me nuts is the scene in the first bombing mission train when the Midgar employee has a piece of the background coming through his stomach. No idea how to fix that.
Also I think you should structure the option to remove glitched lighting effects from Facepalmer in such a way that strongly discourages doing it. I've tried both and the hi res lighting is way way more appealing, flickering or pulsing or not.
Edit: Kompass's Game Converter is definitely worth looking at. It does a bunch of things including allow for bootleg to be installed on XP, which I have heard is problematic or impossible. If nothing else you can just steal his ideas and use them for bootleg41