If it has the S4 Qualcomm/Snapdragon 1.5 GHz dual core processor inside (hoping it does, anything less would be uncivilized) it will be a big deal to me.
Also, of course, I am strongly hoping for removable battery and sd card slot. *Please hTC*
All that, to me, would trump the One S. That is, if the camera hardware has the image chip (image sense) then it would be capable of running sense 4.0, if not sense 3.6 would be fine with me. Again, hoping for sense 4.0 with the enhanced image chip...
In benchmark tests the S4 processor outperforms the 4+1 core Tegra 3. You could even say blows it away...
http://www.androidauthority.com/a-preview-of-the-krait-based-s4-vs-tegra-3-and-exynos-4210-55639/
With all this hoping, and certain criteria met, it has the potential to be a really great device.
This will be my next phone, if it lives up to the potential.
If not, I will just load the ICS/sense 3.6 official update from Verizon on my Dinc2 and keep it.
Then again, it might fail and just be another "me too" device from last year...so the Rezound would be better like you said.
I really wonder if this phone is the Droid fighter, or that will be a another totally different device from hTC on Verizon...