I think the key word here is "need".....The rebound damping is too light at full bump for my taste...front end has a tendency to pogo...
And my gut feeling is that adding spring rate in the form of a set of Geisers would make the issue worse...
It's not as if the factory suspension valving sucks, it's just I (and others) feel it and would love to give the front shocks a tweak to get it closer to perfect for my trucks usage...
So if you don't use all that travel at various speeds then yes, the valving is just fine...
In your posts you said you want “max” rebound damping at full bump, and that the stock rebound is too “light” ? I don’t know what you mean by “light” but I assume you mean you want to slow down the rebound speed, since rebound adjustment speeds up or slows down the rebound stroke.
You can’t adjust where the rebound damping/speed functions in the travel without high and low speed rebound adjustment circuits, it cant even be done with just a revalve.
Im sure you can get a revalve done to slow down the overall rebound , but the “pogo” issue has just as much to do with the rear settings, probably even more, than just the front rebound speed.
You can spend 7k on your suspension with a Fox 3.0 setup and you still won’t have rebound adjustment with the front coil overs, and only single speed rebound on the rear.
You may also want to do some research on progressive vs linear rate springs. Geisers are designed to lift the truck and feel like stock. I went with linear rate Eibachs, which in my opinion will work better for the off-roading that we do.