Good luck staying in a serious raiding guild with that attitude.
But what if…we don’t want to be in a serious raiding guild? 
In all seriousness, though, there aren’t many guilds that bar people from not having the exact talent build in the exact right points. Most teams will just be grateful to have a healer at all, not gatekeep whether they aren’t worthy because they only have 27 points in Resto instead of 31. I have a 0/25/26 build myself, and it works fairly well for both soloing mobs and for raiding, with Imp SoE / WF Totems helping out significantly in the latter. It’s not good in world pvp outside of a coordinated group, but Shaman in general isn’t gonna do well in solo pvp unless you have at least 23 points in Elemental.
