Since you can get
top status (Platinum) in Priority Club just by
holding the Chase Priority Club Select Visa card ($49 annual fee offset for most people by the unrestricted annual free night cert; no minimum spend requierd for that top status):
http://www.flyertalk.com/forum/inter...um-status.html
and since top status in Priority Club still doesn't guarantee you anything (while Gold status in Hilton HHonors guarantees you free breakfast and free internet every day of the week worldwide at all brands, though sometimes it's "outsourced" at a few properties in the US, at Priority Club it's up to the individual hotel what, if anything, they give you for your Platinum status), I would suggest not "dropping out' but "scaling back" on Priority Club, to where Marriott and Hilton would be your main two and Priority Club would just be a backup (for when it's got better rates or better availability or whatever).
With that credit card, it will no longer matter to your Priority Club status whether you stay 100 nights in a given year or just one (the free night certificate night), and the status benefits at Priority Club pale compared to the status benefits at Marriott and Hilton. (But Priority Club sometimes has the best redemptions, including 5k PointsBreaks, which is why I don't suggest giving up on it entirely.)