1) I'm pretty sure you're referring to the Notorious Monsters, since you brought up Frozen Frog there (and I'm pretty sure others such as Parasite from Forest of Magic, Ruby Dragon/Crystal Dragon from Blazing Fires, and Half-Phantom as well from Winter Forest you've fought as well). Yeah, they're pretty much mini-bosses in their own rights, which is what I wanted to have!
2) Yeah, some (like Marisa or Patchouli) will only be healed for half and others (like Yuuka or Aya) will be healed for double due to most things having the Magic tag. As for them taking damage....seems I can't have healing stuff have elements to them. Since Aura Whirl is Holy and Magic attribute, and Sanae is Holy, for some reason it seems the game will reverse the healing into damage....baaaaah. Checking up on this in the RPG Maker forums to see if this is the issue.
3) Yeah, that's my issue with the EXP is that in specific places, especially beta2 onwards, is that EXP is TOO easy to obtain (Hakugyoukurou is a prime example here). This is due to the fault of RPG Maker's EXP curve, which you cannot alter manually and are stuck with setting fixed curves. And the curves are horrible at that (EXP required per level goes up 613 per level. So from level 1 to level 2, you'd need 614 to level up, then from level 2 to level 3, you'd need 1227 to level up. It's horrible because I would NOT want anyone to have to get that much EXP at the start of the game! I wanted to originally follow an EXP formula similar to FFV/FFVII, but can't because of that issue...also, beta5 onwards makes SURE that you're using everyone. Just saying~
4) Yeah, I WANTED money to be harder to get in this game for a reason. It's just that same issue above lol (that, and balancing everything is a pain in the arse...@_@)
5) Actually...because of how RPG Maker 2k3 works, a lot of the stats mean absolutely nothing in the long run. The MOST damage I've seen an enemy do, this being the enemy having a 100% Critical hit rate, with 999 attack, and your character with 1 Defense, is roughly 1000-1500 with a regular physical. The MOST I've ever seen a character do (this being Remilia with 2 weapons at 2000 Attack and the enemy with 1 Defense and with a Critical) is roughly 2000 damage. Without the criticals, it's about half that, if even that. The formula is pretty stupid (Damage = 1/2 Attack - 1/4 Defense), and let's top it off by having Magic AND Magic Defense share the same stat...yeah, you can see why I never made a tutorial for the stats lol....still, equipment is relatively important nonetheless!
6) See above. I'm actually going to alleviate this problem by having all enemies take 250% normal damage instead of most of them taking 100% normal damage. Problem here is, I have to also make sure that the skills don't share the same Attack attribute as weapons to avoid THOSE getting a 250% bonus to their damage @_@ And funny thing here, is that the vast majority of weapons have a 90% hit rate, just like skills. Yeah....don't ask.
7) Some of that stuff is pretty ridiculous if you can get them early on (Nitori's Call Shop for instance is stupidly good, especially if you've been leveling her up) and that's the only way to GET certain things too. That's why it's like that right now.

I haven't decided yet as I'm still in the process of revamping her Blue Magic list from 60 to roughly 25-30 spells, as a way to balance her out more. Having one character be able to do everything isn't a good idea now is it? Plus, I'd like for her to be more of a gimmicky type character, as Blue Mages tend to be!