I can see the benefit of the OP's feature request. The only other option would be a manual punch in. Click on the time-line some bars before the punch-in and hit R to punch in (if set to do so in prefs). However, this isn't as accurate. Sometimes the punch-in place has minimal space to punch.
To me, the problem with setting punch-in is that it requires an -out point. Sometimes, I just want to punch-in and keep recording. To do this with auto punch-in is drag the selection past the end of the piece (if needed). With the OPs FR, you just set the cursor at the punch-in point and hit Record.
CA, is there a way to just enter a punch-in point alone? However, I still think this would require more clicks than what the OP is requesting. Hence, I too think it would be a nice feature to incorporate.