I also agree that further creating two classes of passengers would IMO alienate those that don't qualify for getting "priority" for their reservations. Also it seems like something difficult to manage. Would Radisson need to establish a cut-off date/time by which all their "priority" customers need to make their rest. reservation( after which date the unwashed masses can aspire to occupy whatever time slots are left ?).

It seems to me better that they offer perks that are less conspicuous, such as the already mentioned free internet, dry-cleaning, etc. Maybe extra free liquor/ wine in the suite set-up, free transfers from airport, could be another perk.