The perception of SP potion "abuse" is about as valid as restricting "optimized XP/min farming" of quests such as Shadow Crypt or capped level Epic VON3 destiny farming without repetition penalty.
Geared players can self regulate. If 9 divine players want to join an epic shroud run there shouldn't be any "restriction" on how many divine players can join a raid based on the reasoning that then there will be more "healers" for lfm's that have been up for one in a half hours without a healer willing to join it.
Some find it fun to toss a maximized empowered quickened disintegrate to kill a kobold. I say let them.