I'm not too worried about it. I have like 4 Henkei Primes (I've been expecting add-on sets like this to come out ever since City Commander/DIA Commander) so I can easily scrifice one for this.
I don't care what it looks like in cab-bot mode, as he'll stay in combined mode with the trailer anyway, and based on the pics/renders I've seen of the combined mode so far, it's far superior to anything else out there that's supposed to be/pay homage to Powermaster Optimus Prime.
So the standalone bot mode can look like junk, the trailer in trailer mode can look like junk, but if combined mode looks awesome (which this one has so far), then that's all that matters, because that's why I'm getting it and that's how it will be permanently displayed.
So hurry up Xovergen and take my frickin' money, cuz I needs me some Powermaster Optimus Prime love