Except I don't think Blue Mage is one of those :/. The number of abilities you get can easily fit many of the popular monster abilities, and could easily make a tank or dd (heck you could add abilities into the wild that you want blue mage to learn when you add blue mage, "making" the abilities you wanted to give him lol). Or give lore on how he enhances the given abilities. The issue of acquiring abilities can be made unique so long as it doesn't conflict with DF, which I've already suggested one solution (that will ensure that you never get a blue mage who doesn't have X skill, and scales so you dont have to make a quest for every single ability (cheaper the longer Blue Mage develops)). So to me it's like making "Red Mage" a mini game because it's "too hard", at that point a lot of Red Mage fans would be like.. no.. try again.
If you say making morpher is too hard then maybe I understand, because almost all morphing classes are defined by their ability to adapt and usually by adapting to different styles entirely not different colors of the same style (IE Druid who can tank, heal, or DD depending on spec and gear). You could make a morpher who could adapt to different types of damage, or using a complex form of stance dancing like a weird Udyr sort of build - so it's more all samey. But people might not like that you shift forms so frequently. I do see Blue Mage taking more resources to create than say Paladin, so I get not rushing off to make em' but if you're going to make a whole mini game about it I will say go back and try it again or don't make it at all. (do it right, or not at all :X).
So I'll face palm so hard if they do that to Blue Mage. I think it'd be possible to make morpher work in DF but unfortunately it'd also be sort of like "why play other jobs" when you only have to level and gear one to do all three, that's not really balanced and we don't have a spec system that could play on top of the job like Druid in WoW (or have to do the "types of damage"/Udyr/stance dance types of solutions).
Also I agree with your kids. Getting Frogged is awesome. I just hop around so hard when it happens lol. I want to be able to pull out those cute frog hats and /dance xD.
I was going to say having people be able to forever transform into GC leaders would be a bit meh, but then you said GS only and I was sold. I think that's great place to goof off~ (I think some of the more reasonable goof ones could be used outside maybe, but GC leaders are kind of important haha). Anyway GS messing around is great![]()