I think your actually supporting my case. MRQ core may not fit Conan well, but that doesn't mean the system can't be tweaked to get the job done.
d20 is based on D&D, a lot of people felt that D&D would be a very poor fit for Conan, but with the proper tweaks d20 Conan seems to get the job done for a lot of players.
It would take more than tweaks. You'd need a whole different system, which looks only slightly like MRQ. And why bother when there are systems already in existance that do fine?
MRQ is a BRP derivative and BRP had been used to publish fantasy, modern, sci-fi and even supers games long before d20 came along and was used as a tool kit for multiple genres.
I know that. I was playing BRQ derivatives ten years before d20 was even published. Some of them were a damn sight more successful conversions than others.
I'd also like to add that we're talking about Conan here, not the Forgotten Realms or some other fantasy world specifically created to support a given system. Conan has been done by GURPS and had it's own system by TSR. I don't think there is any question that the Conan license will outlive d20, if Mongoose doesn't do a different version than some other company some-odd years down the road will. It's such a powerful IP that it will continue to resurface in RPGs and many other markets.
I daresay. Several people on this board are playing it in Savage Worlds, and I myself have run it in FUDGE. That doesn't mean converting it to MRQ is a good idea.