I think it would be preferable to remove conc stat buffs from the game entirely and shift most of it into stat gains on level up, but sparing that:
Maybe we can drop cast speeds for each tier of buff similar to heals.
3.0s - 2.8s - 2.6s - 2.4s - 2.2s - 2.0s (for all stats, + Sham Endo, Druid Haste, Cleric AF and crap regen)
Then maybe a range increase to 1500
Maybe we can drop cast speeds for each tier of buff similar to heals.
3.0s - 2.8s - 2.6s - 2.4s - 2.2s - 2.0s (for all stats, + Sham Endo, Druid Haste, Cleric AF and crap regen)
Then maybe a range increase to 1500