When ? If I remember correctly when Bale took the FK is when CR was injured no ? CR is on 54>0goals till now, and it doesn't seem like he's gonna take anyone else take them.
Messi let both Neymar and Rakitic take a shot just in the last couple of weeks.
For your question, I don't really know who's good with free kicks in RM apart from Bale.. and he'll always be on the field, up until the end of the season at least.
Every game, basically, i guess you dont really watch RM. Bale is a very good free kick taker, so its good he takes a few, but since he shouldnt even be on the field in present form i would like to see someone else try.