IMO it will help a little but it ultimately won't work. I've laid it out here before, I don't want to repeat myself. The main problem of the Rubio-Favors-Gobert combinations is not the lack of stretch 4. It's the presence of both of Rubio and Gobert. The stretch 4 will alleviate a bit of the pressure on the back end, but Rubio still cannot beat the pnr when paired with Gobert because the bigs will continue to drop off to stop Gobert's roll and won't help with Rubio because the guard will always go under and this won't create the situation for the big to help.