If you scroll up a bit I suggested that instead of a main hanger those scenes could take place on a parade deck (more like the parade areas of Kamino than a conventional hanger deck).

I'm thinking more circular than rectangular, it could still have a big curved window or hanger opening, that could allow for even more troops to be present than now (another possible place to put a giant representation of the Imperial Insignia the troops could all standing in formation in the shape of the symbol like in Nazi parades) the whole thing is put on as a show for the old geezer.

It would require a new matte with a central elevator coming from the mooring tower instead of the shuttle.

Star Wars has loads of hangers and two more in Jedi as it is.

To have Palpatine inspect his troops in a different kind of space would add further variety to a special edition.