@Felon, I have been entirely on your side. I don't think there is a problem with you trying to swap out a PP power you don't like and if you can find a way to do it that's great, which is why I mentioned familiars as a possibility (I guess I wasn't the first, but anyway...).
All I was saying vis-a-vis the dearth of PP power swaps is WotC is unlikely to change that. Hey, I could be wrong of course. You are correct, some design patterns change, but others equally well don't. Any debate about which ones might or might not change is pure opinion and speculation. I happen to believe my opinion is likely to prove accurate or I wouldn't hold to it. Its OK that you have a different one. I don't think I'm smarter than everyone else or right all of the time. We all think we're smarter than the next guy, its a basic truth of human nature.
Anyway, I think you should convince your DM to let you pick up something from Dragon. I won't be surprised if they errata some of that stuff at some point to exclude PP power swapping, but they may also feel that swapping a PP utility power isn't that big of a deal. Its hard to say for sure. I think it may be a matter of WotC drawing a line and then moving that line a bit later on. That doesn't mean they'll just erase it.