What did y'all think about the implementation of the spells and items in this remake?

I usually just use healing items in every Final Fantasy, but this was the first where I messed around a bit. I found that Grenades, Fuzzy Wuzzies, and the other stuffed animal bombs are the best ways to take down the Shinra guards with shields. It'll knock the whole group down letting you attack them freely. Of course you can also use a Fire spell, but that's not as fun to me.
I also used the molotov cocktails too for enemies weak to fire for my party members who weren't Cloud. In general this game is harder than the original so I was definitely using more healing items than usual. I've never used so many potions before in my life. The only other time where I was so careful with my spell and item usage was in the post game in XII.

About the spells I do like how the black magic spells have an area of effect so if enemies are really close to each other you can still hit multiple targets without the Magnify materia. It annoys just a little bit that they kept the old names for some of these spells, but not all of them. All of the black magic spells are with their updated names, but Barrier and Manaward should be Protect and Shell. I can't remember what Manawall is supposed to do, but I suspect it's Reflect. There's also Raise and Arise which I think were only in the Ivalice games. I feel like this was still Life and Full-Life in VII. Anyway it's weird because they have Auto-Life.

Maybe this is only unique to Kingdom Hearts but I thought Mega-Potions were supposed to restore 1000 HP to your whole party.