Different text width and angle from ESB & ROTJ may be signs of authenticity, rather than recreation. Remember the ANH crawl was re-shot when the ESB one was done, which is why those two match. The pre-ANH crawl was always a little different stylistically from the "Episode" ones. Not saying it's 100% authentic (it does look overly stable), just sayin'...

As for the hybrid idea - I don't think so. The whole point of this release was not to put time & money into it. The overall saturation is boosted a little (nowhere near SE cartoon levels, though).