Every Red Mage has an individual image of where the job "should" go, or "should be", Cid. Don't let the extremity of the ideas get you panicked.
What I want, personally, is more support for the iconic Red Mage throughout. This means giving Red Mage a debuff method to regard TP attacks - the only section now we cannot directly impact, and a utility that allows us to take the front lines.
No offense to Dulle, but he does not represent the majority. What he's creating is more akin to Sorcerer or Mystic Knight than Red Mage.
Go back and play 1 and 5. The 'Fundamental design' of Red Mage DOES, in fact, favor casting. However, unlike in MMO settings, Red Mage needed nothing more than an appropriate weapon to deal sizable damage. in MMO's we're going to need a full set of gears and support abilities to match. Right now, that is lacking.
To get into the thick of things with the more, truly for the lack of the better term, elitist DD bunch, there is going to have to be some utility tied directly to Red Mage's front lining that benefits THEM. Cause any sort of buff that just directly benefits our personal performance is going to simply be cried about for a nerf and how "Red Mage is too imbalanced, it can do everything!"
As far as depreciating Haste and Refresh. Refresh IS depreciated. All this is done for many mages is allow them to be irresponsible with their MP pools outside of Abyssea. Haste will never depreciate due to how powerful of a status it is. Whether or not the role of the 'haster' depreciates thanks to it becoming available via two subjobs at 99, will just seed another problem: There will be no purpose for a Red Mage because we can't heal/support as well as a WHM/RDM.
If we Receive Cure V in that time without a substantial change and streamlining, we're back to competing directly with WHM for the healer spot, which I find is unacceptable, and it was a major mistake for SE to allow the role of the Red Mage to be pocketed as a solo healer for as long as it did.
If the aims are to depreciate the value of Haste and Refresh, the only solution for a Red Mage in this situation is to truncate the 'cycle' mentality directly, namely, Hastega. Given to White or Red this will destroy the concept of a cycle-mage, which, more than anything, is the primary issue on Red Mages in the front line.
After that, you could provide some recognizable front line utility and the arguments against letting a Red Mage who's geared to the front lines will fall short. The only untouched utility as it stands now, however, that we do not have in some form is monster TP gain/TP attacks, and it just happens to address the "yur fedin tpz to da mobz1" argument.