I'm not the sort of person who's constantly thinking of things for Disney to give away for free under the impression that "for all the times we go to Disney, THEY OWE US!" In fact, I usually feel the opposite; Disney is holding a gun to nobody's head to make them keep coming back, they provide a service, charge a premium for that service and caveat emptor.
Having said all that, when it comes to this glasswear thing, I'm not 100% sure what the rationale is for getting rid of the glasses - is it a health thing? Are the glasses not being properly cleaned? Well, in that case, give us an extra sample sized dishwashing soap so we can clean the glasses ourselves, and leave anote recommending we do so "Treat 'em like brand new dishes and just out fo the box, wash them thoroughly before 1st use" kinda thing. If it's because the glasses keep getting broken or stolen...the refillable mugs cost next-to-nothing, and while they make a huge profit, they could just as easily and inexpensively make small, SMALL (6 oz) take-home souveneir glasses for the rooms. THey'd be too small for most people to want to use them the way they use refillable mugs, but they'd be perfect to use while in the room, the negiligible cost would probably add a few pennies to the cost of your dues (especially since, technically, DVC is supposed to earn next-to-nothing or absolutely no profit on dues). Brand new glasses for every visitor, a little keepsake that works as extra free advertising for DVC once people come home (come on, you know you'll still use 'em at home). It's not the huge profit margin the refillable mugs are, but they serve a practical purpose and keep the customer base happy. It makes sense to me.