The feature request section of these forums dates back to a time when the developer had a lot more of it. The developer still checks in here from time to time but now the only people that will really see them are other users. The best way for a good idea to get to the developer now is to send them through the ticket system. The people that manage that end of the support usually forward these requests to him.
I think this is actually a good idea, it could be added to the “Instruction placement” setting for the field group (Below Labels, Below Fields, Tool Tip).
