I wouldn't mind for alts but I would feel better anyway a boost of experience while playing. Considering the ability to play a job, the proper rotation we play at the level 60 is not especially the same we use during leveling, then we learn our role while playing 60 contents.

The real problem about players skill is the difficulty has a lack of progressivity then boost of xp or levelling potion will not change anything (especially if people are trolling).

PS : This considering alts but... well frankly speaking I think SE would rather tend to offer this for every players and every characters. In that case, I'm not sure, feeling some kind of hesitation.