I think that part annoys me most, since if they wanted to add this sort of solo content they could have done so with something entirely new. I'm happy some people want that new way to play the game solo content (maybe, it's not clear blue mage is "that" solo friendly). I was sort of excited when I thought it was going to be true to form 1:1 OP spells with extremely strong solo ability but seeing the leaks I'm not sure (they don't look that OP and the fact you need groups for a lot of stuff probably means they're not that strong, will still wait before scoffing though it's literally on our doorstep to wait for lol).
Either way though those who are satisfied for this "new way to approach the game" probably would have been fine with any other job - meanwhile those who wanted Blue Mage to be a job to play as one are now praying they'll make it both limited and not or just abandon all hope (able to be weird and also become balanced).
I don't believe the core of Blue Mage is customization though, besides FFXI that's not been blue mage's "thing". In a FF with jobs that also had blue mage the spell lists have been quite long, and the learning generally open. Learning from monsters and using monster spells is Blue Mage's thing. Cannot agree to a concept that Blue Mage couldn't be implemented just because of customization as that's not Blue Mage (imo).
Although - I think they have the opportunity to give Blue Mage a silly long spell list (limited) AND allow them into duty finder by allowing Blue Mage to be both (limited and not), which could be really interesting I suppose. Really hoping they take a subset of the skills you can learn and turn it into a valid job (balanced for duty finder).. I think that'd actually go beyond my original hopes for Blue Mage in this game (if they were able to have a customized non-df content (circus, pf, etc) and also a limited df part).
While I agree the how to fix might be disorganized I'd argue strongly that the problem is exceptionally consistent with people (they want it to work in DF). So I think the consensus on problem is actually extremely clear, for those who have a problem at least. Not everyone has a problem of course; however, everyone doesn't need to agree one exists for one to be so - otherwise very very few problems in the world exist lol (since unanimity or even majority agreement is rare).
Another thing to add to that is most of the people I've read (having read almost all the threads about blue mage here) who want DF are not asking for the solo/SE aspect to be destroyed so in many situations the two groups (those who like SE's version/those who don't) are only at odds with each other in very limited fashions.
That sounds very aggravating lol.. Hopefully that doesn't become a wide spread issue.