I've had the reset boards installed in all of my WPC games, on route, for at least the last 6-8 years ( I even use them in a few games that have aftermarket boards in them). None of my games have exploded, caught on fire, or otherwise just dropped dead.
The boards ARE a fix. They are NOT a repair.
If you are capable of repairing your entire 5v section, great, it is cheaper than a $30 board.
If you are not capable of repairing your own 5v section, great, it's cheaper than paying someone who can, or replacing the board.
Well that's my two cents anyway...