Hard to say until a bunch of questions are answered.
1. Is it really coming?
2. How will it be powered? Return of the Hemi, factory tune on Hurricane, some hybrid/electrification?
3. How much will it weigh? If more, what does that do to handling, towing, and payload?
4. How will it sound?
5. Will it have more differentiation from the RHO than just motor?
6. How will it be priced?
Likely it will be priced much higher, similar to Raptor vs Raptor R, so RHO will still represent a terrific value play and can approach TRX power with a tune.
If there is no Hemi with Hemi sound, then it is probably less attractive than it could be.
If there is some hybrid/electrification, many of us will find that to be a negative.
If payload & towing drop significantly, that's a problem for those who want to do truck things.
No one thinks a Raptor buyer is a sucker for not getting an R. The R is just rare and extra special.
Let's hope a new TRX is awesome, showing up soon, brings more good attention back to the RHO, and retakes the performance crown from Ford.