I also want to add that I recognize that this is an entire ground-up reworking of the whole suite and that Apple has also pledged to reinstate SOME features (I've read the list and none of them fix what has been done in my case). This, to me, is a band-aid to slow the bleeding.
I truly believe that the ONLY way that Apple can fix this is to FULLY REINSTATE Pages 4.3 and the latest versions of Keynote and Numbers (from iWork '09) and their presence in the Mac App Store (with a statement that these applications are no longer being updated but are transitioning to their respective new versions, which are also available). This way, those of us, who have paid for them (but can't download them anymore and have had to get them through other means) and who cannot wait for Apple to add features to the new versions, can continue to use 4.3 without being nagged about an update and perhaps keep both versions around until we feel ready to transition over to the new ones.
If this were the case, I may actually reinstall version 5 and give it a fair shake from time to time until such time as it has the ability to do what I could to in 4.3 and begin the transition. As it is, I'll just keep looking at the notification badge on the App Store icon (which I can't get rid of) and be reminded of someone's insane decision at 1 Infinite Loop.
This is the ONLY way they can fix this NOW.