I haven't played Vision quest yet, but a negative I've heard is that the event scripting is kinda bad, and most cutscenes are just "characters show up and vanish off screen" with barely any stuff like map cutscenes.
As for other romhacks, there is this image which i have seen circulating on /feg/ and sometimes /v/, i haven't played all of them but I can vouch for DLatMoL and SoHaE's quality. Tacthack is okay but the endgame loses a lot of steam as you encounter more and more garbled text from FE7. Last Promise is infamous and a bit of a meme but i don't think it's as bad as some people make it out to be, and it deserves a playthrough just for how what it managed to do with the tools available at the time. Deity Device is alright, your units snowball HARD and can become army destroyers with little to no effort, map design is kinda iffy at times and enemy formations feel copypasted instead of natural, the 3 houses like magic system is cute but also makes the game piss easy since you can just spam the best spells most of the time with little to no repercussion, but one thing i really liked about it are the gaiden chapters, where the non lord characters take the spotlight in a way similar to Kaga's games. Storge is fine too, dialogue is a bit cringy but that isn't really the point of the hack as it's more of a FE rogue like (lite? I never cared enough to learn the difference) where you pick your party and items at the very start and then play through a micro campaign which encourages replaying and trying out different characters.
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