With your permission Teten1, I'd like to bring in evidence from other DLCs, dare I mention the god-forsaken Mediterranean portraits?
With all due respect, they really do need to fix the Mediterranean portraits...
Personally, I own all the DLC, and plan to buy Charlemagne ASAP, but seriously, there's nothing wrong with revisiting old DLC (Med. portraits) to bring it up to the quality standards of the newer DLC (Norse portraits)... after all, we did pay for it.. and if fixed, I imagine a lot of new buyers would show up as well...
I actually like Sunset Invasion from a pure gameplay perspective, (and though I doubt it, given the harsh criticism of Sunset, I'd like to see more Historical Fantasy/Alt History stuff come out officially from Paradox in addition to the epic stuff coming out from modders in this area), and the fact that they gave the EU3 converter special content for Sunset Invasion made it, probably actually worth the full price (IMHO), but the Mediterranean portraits did disappoint...
And in case the OP is still following this thread and reading our replies:
I would say, give it a chance... if you can spare the cash, why not? Did you like Old Gods? If so, then its more likely than not you'll enjoy Charlemagne...
The feature I'm most looking forward to is the story-scenario mode as Charlemagne... while CKII is first and foremost a sandbox game, I've always wanted to see more special story-driven event quest-lines... I'm expecting it to be something along the lines of what AGoT modders made for Daenerys Targaryen, which is one of my favorite things in that mod... so I can hardly wait to see what Paradox itself can do along these lines...