IMHO it's worth it. And to be honest: €5K (let's better say €3,5K when "upgrading" from standard Panorama Roof) isn't that much in relation to the final price of the car ;)
looks like a "wait and see" situation to me, even though i'm not affected (my GTS will be build in march 22). I totally understand everybody who's p***ed actually, but nobody has hard facts at the moment.
Think Porsche will do everything they can satisfying early owners. Problem could be that...