Don't disagree with your assessment, but unfortunately, it seems like Toyota is moving to slightly higher revving engines in general when you look at the various iterations of the 2GR-FE/FSE/FKS. I think this could very well have to do with the integration of VVT-iW. The logical engine choice for a next gen 4Runner is some variation of the 2GR-FKS... it's simply not going to get it's own entirely unique engine, but either a tune of the 2GR-FKS or an exact drop-in from one that currently exists.
Right now, that engine makes between 278 and 295 hp, and 264 and 267lb-ft of torque. Horsepower is up significantly but revs are really not. When you look at the difference, the 4Runner delivers 14 more lb-ft of peak torque just 200 rpm sooner than the Tacoma. On the road, that's not a vast difference by any stretch, and I wouldn't call 200 rpm difference having to "rev the crap" out of an engine. Highlander delivers peak torque just 100 rpm later than the Tacoma and 300 rpm later than the 4Runner.
I don't think that the big difference here is so much RPMs as it is gearing - all other applications of the 2GR engine use 6 or 8 speed automatics, so the gear ratios are much shorter. If we ended up with a 4 Runner that had ~300hp and ~270lb-ft of torque, but a 6 or 8 speed automatic that kept the engine in the ideal range for power delivery, you shouldn't ever be "revving the absolute crap" out of an engine unless your foot is down.
I love torque - more than horsepower - and for people who will live and die by that mantra and want a BOF SUV, the GX 460 may well be the best bet.
Personally, I am willing to give up 200 rpm of extra revving before max torque delivery to get 20-30 more horsepower and more gears to use it in. I think a lot of the buying public will end up in that camp as well.