If we had an offensive Enhancing spell, it wouldn't be so bad. Closest you can get now is casting buffs on Beseiged generals, but no idea how well that works post-85. Plus it relies on Beseiged happened and, for sake of speed and efficiency, nobody else casting a higher tier your target.

SMNs have it a little better because they offensively target things with BPs, but the old summon/release spam is indeed slow, much like buff spam.