The plaza is not even close to the original plans. Grinchmas got axed because they didn't build the stage they said they were going to build.
Okay let's not exaggerate here.
The plaza actually
is very close to the original plans. Here's what is missing/changed:
1) Retail store behind the tower was nixed
2) A (very) small stage behind Pink's was nixed
3) Pink's was originally themed like a studio backlot, with a smallish (short, but large) water tower-esque feature that bookended both the dining venue and the small stage. This was changed to induce a more cohesive theme.
4) The box office was originally not under the tower.
5) Finley's was supposedly going to be a Starbucks. However I believe this is just a rumor.
...and that's it. The rest of the Plaza is exactly how it was planned out.
Whether or not Grinchmas' tree lighting would've happened with or without the stage remains to be seen. It was an extremely small stage space that could hold the tree... maybe a celebrity reading but the crowd control would've still be an absolute nightmare to manage. I think that, guys, is the real issue here.