Conrose
OG
The player would only get the one ability and a handful of passives that they could get to 85 without even thinking about the impact it has, it's not like hitting a specefic level and suddenly getting 3 entirely new abilities. And it isn't so much balance than it is making the bgs more approachable to a new player who is leveling up, which is something blizz seems to want to improve. If one class lacks any spec abilities until 40 for any tree, that class finds itself at an enormous disadvantage for a long portion of the leveling process in the bgs.