Datacolor User to User Support Group.

Well, now you'll have all sorts of "I calibrated my monitor now it's
too blue" complaints. You don't have to put all Pro features in - just
the ones that make sense. Native wp made a lot of sense for the
majority of users even if they don't know it. If 6500K is in such
demand make it an "advanced user"  option. 

You'll sell tons of Expresses as long as reviews frome people like
Keeth Cooper are good. Nothing will replace the Pro features like
validation, info, colorimeter information for advanced users - but
there will always be few of those.