Tbh I think overmelding is mostly fine as it is. You can go into savage on week one without overmelding and do completely fine; half of my static didn't overmeld at all and we cleared the first two fights in like a week and a half. We did have some crafted gear, but that's honestly pretty easy to get week one, and you can farm ex trials/normal raids for gear prior to the tier if you don't want to craft/pay.

For doh/dol, honestly you don't really need to meld much right now? Most of my friends are barely overmelded (like just 10s in the first overmeld slot and nothing else), and they can all craft the expert recipes just fine. When you have crafting food + pots and even fc actions if you're really struggling stat wise, you barely need to overmeld to craft endgame pots/food/gear with like 95%+ hq chance, not even accounting for having hq mats and so on. Like idk if it's just me, but it feels like the stat requirements are lower this time around.

I do think they should add some sort of pity to the system, though. I don't mind losing like 50-60 materia when I'm trying to meld, but there is a point where it's just ridiculous. My luck was so terrible this time around that I ran through about 300 materia on a single slot, which was..... not really fun lol. It's admittedly a really rare case, but that fact that it can happen at all is kinda sucky, since I'm pretty sure with what the marketboard prices were at the time that was like 9mil gil of materia. on a single meld :/ so I'd be all for having a guaranteed meld after a certain amount of failures.

Shitty luck aside, for the most part, it's really easy to get materia. Farming legendary nodes with squadron spiritbond manuals + spiritbond potions basically flings gathering materia at you; hunt trains give you a huge amount of combat materia for a relatively low time investment. crafting materia is a little more annoying, but farming scrips for it is decent.