I don't think any of us need to chill out thanks, some of us liked Epcot the way it was and its been declining for a long time. I know that Epcot needed updating but those updates could have been done in the spirit of what Epcot and future world originally represented, not just putting down IPs for popular films to capitalise on their success.
I don't doubt for a second that the Guardians of the Galaxy attraction will be great, TDO will spend vast sums of money on it and no doubt what we will be left with will be pretty spectacular. However my problem is where it is going and what it replaces, I actually like the UoE pavilion and I know I am in the minority particularly if you included all guests in that for some reason I actually enjoy the current iteration in that building.
I encourage you to read the below book, that book encompass what Epcot should be and was-