Seems a bit of a cop out on the rpm logger, saying it's better to buy something else is a confusing sort of self defeating principle, it would have been nice to have a rpm log 'without' having to buy something else.
As to new servos, well they may have come a bit late on that front, Savox seem to be the current king of budget priced servos, but it will be interesting to see what HW comes up with.