'create the option' was the OP suggestion
There would be nothing wrong w/ this in general.
The idea is that it was an option in JNSE, Winning Putt etc. and also The Golf Club but that is mainly a cool option because TGC provides the ability to MOVE YOUR VIEW all around the green so you can see the clearly defined topography.
I've seen players use the no grid option in TGC and it was possible.
This creates a new level of challenge but although it would be super hard because of the limits of WGT's viewpoints (i.e. the camera cannot move around the green as in other games) , the OP suggestion of 'providing an option' wouldn't be crazy because those who are apparently dependent on the grid lines could OPT out and NOT select this choice.
Natch, many WGT would like to have WGT focus on other things rather than offering options suggested by players.