By all means, add the IdeaStation post (and include all Feature Notes in the request: Hole/Thread, Chamfer, Punch, Bend). I will support it and I'm sure many others will, too. There might already be one there, in which case a duplicate isn't necessary. Be sure to post a link in this thread to your new idea, or to an existing one that you find.
A workaround to avoid the costly errors, though, is to use part parameters in your Leader Text. It's tedious to find them in a busy part, but should at least avoid mistakes that have big time and money implications:
Sam B
Inventor Professional 2015 SP2
Windows 7 Enterprise 64-bit, SP1
HP EliteBook 8770w; 8 GB RAM; Core™ i7-3720QM 2.60 GHz; Quadro K4000M