You are getting off lucky. It is pretty much a negative impact on any trip that is less than 7 nights. Personally, the impact it will have on us is that after we plan the rest of the 3 trips that we WERE going to plan instead of having 18 points left to bank we will be 3 points SHORT. One trip goes up by 10 points for 5 nights and the other goes up by 11 points for 6 nights. And the same trip we've already planned for this summer would cost us 6 more points in 2010. In comparison, we're getting off easy. There are some people who for years & years USED to be able to vacation for a full week in a given size unit during a given season for 350 points and now they need 352 points. So they're now 2 points short!! That's awful because they thought they needed 350 points so that's what they bought. NOW they either need to shave a night off their trip, downsize a unit OR shell out more money for a 25 point add-on to fulfill this 2 point shortage. How would you feel if you've been taking the same vacation for 10 years and now all of a sudden you've got this lousy 2 point shortage to deal with? Not happy I'm pretty sure. I'm glad that we've only been members for a couple of years and have not established this set vacation pattern - it's hard enough to swallow being new.
I fall into the group that tends to vacation at the same time each year, for about the same amount of time. Jobs and school schedules don't allow us to be too flexible. I also fall into the group whose usual week has gone up in points, so even though we have stayed one or two weekend nights on our past several trips, with these changes we will now need to cut back on the number of days we stay. So, not a happy camper, and even less happy to have to learn of this change on these boards, since I never received an email (though I used to).
A few in this discussion seem to indicate that those of us who are disappointed in the change are wrong, since Disney had the right to do this, and we should have anticipated it. Maybe so, but as no changes were made in the 13 years that I have been an owner, I have gotten used to the current point schedules.
Maybe it's true that I should have purchased a week-based timeshare, but I bought Disney because it is Disney and I want to stay on property...I have no interest in any other timeshare. It's true that I don't have lots of points...we bought in as a family group and share some of the points. Up until now that has not been a problem (even with some like us staying on weekends). Now most of us will be a few points short. Adding on is not an option...with two kids approaching college age, vacations are important, but I do like to live within my means.
So in the end, I am part of the group that will stay fewer days and make fewer trips. Like almost everything else financial in my life days, the value of my Disney points has gone down. (Admittedly, this is just my situation.)
Thanks to Brogan for presenting the point of view of many of us on these boards to the CM from Disney. And, even though I am waiting to see how this benefits me, thanks to tjkraz and Dean for trying to make us see Disney's side of the change.
One more thing...while it's great to have these boards to share ideas and opinions, as I keep reading through this 145 page thread, I can't help but feel that limiting discussion of this change (which is major to some) to one thread feels as though we're all stuck in a little soundproof room together, when some of us just want to scream.

It seems to minimize the impact of the change on many members' vacations. (And the moderators are saying, that screaming thing is exactly why we have put you all together!)