yah it's great... they should've done that in the first place
checked in the test server first time it went up, it will be a hell week or two not just for the end users (who have add-ons and a lot to boot) but devs as well... lots of changes = lots of errors.
there are add-ons that do not produce errors at all but do not work even
and to think that they are for sure under a strict timetable this time to coincide with the halloween this October 31st, so probably by the 3rd week of October they have to release patch 1.8 since October 31st falls on Monday and it'll be too late if they patch it on November 1st (when many are giving respect to their passed away relatives). Besides Halloween is October 31st not November 1st
my friends and I are looking into the changes as well, it's great, hopefully they'll make the whole UI break-down to pieces and completely convert them to Blizz_Add-Ons. imagine the possibilities...
^_^