Instead of adding wider base plates, why not take a dremel and carve a half-moon shaped recess in the grip? Simpler and keeps the same low profile. Still serves the same function if you need to rip the mag out of the gun.
I did that works great,no problems sense then that was a couple years ago.
It has gotten common in some quarters to now describe Glocks as needing sights, TD mag release, TD slide release, and an Apex extractor kit to be ready to go. Much in the same way many say Apex triggers are needed for an M&P. Individual mileage may vary but I have found I have no use for any of the TD/LAV after market parts on my carry guns. (nor Apex so far )
Wouldn't say it *needed* them, but the TD slide release and (to a lesser extent) mag release on a G19 improved my quality of life a bit. Would buy again.