Not a bad list but id like to insert something just because it would streamline things. If we are truely to enhance others, then do away with some spells all together.

The following spells i would like to see removed and replaced;
Barfire > Barfira
Barwater > Barwatera
Barthunder > Barthundra
Barstone > Barstonera
Baraero > Baraera
Barblizzard > Barblizzara
Barsleep > Barsleepra
Barblind > Barblindra
Barparalyze > Barparalyzra
Barpetrify > Barpetra
Barpoison > Barpoisonra
Barsilence > Barsilencera
Barvirus > Barvira
Baramnesia > Baramnesra
Gain-STR > Boost-STR
Gain-DEX > Boost-DEX
Gain-VIT > Boost-VIT
Gain-AGI > Boost-AGI
Gain-INT > Boost-INT
Gain-MND > Boost-MND
Gain-CHR > Boost-CHR

As all of these spells behave the same as one another, i see no reason to create separate spells (That are unable to take effect concurently on a single character) other than to deliberately hinder redmage's party support abilities. Making this conversion in redmage's spell library will actually remove 21 spells from the game, giving room for a different 21 spells to be placed in the game in their places.

I however am aware there are some downsides to such a change, primarily a doubling of mp costs for the Barspells, however with their instant cast and mp costs of less than even a cure IV, it would be a negligible loss. I do realize however that would cause some other undesired side-effects, such as less utility for scholar's Accession ability, it would still have merit for use with still a great number of spells, those of note being phalanx, refresh, stoneskin, enspells, blink, aquaveil, and all of scholar's job-specific enhancing spells.

Ultimately this would limit the spells that need to be cycled to multiple members to Phalanx II, (If the redmage is so inclined to merit it) Refresh I/II, and Haste. This would however NOT prevent the redmage from needing to apply Protect and Shell to each individual party member. Having a spell a redmage only needs to cast once already upon himself, changed to that of a party effect wouldnt put much more strain on the red mage itself, but instead may offer less subjob dependancy for certain situations. If anyone would like to add, or expland, or debate this idea though, please feel free to do so.