Of all the things to do, I think renaming Coliseum is a low priority. And, personally, I think it's a cool name that rolls of the tongue nicely with aspirational evocations while paying homage to the history of the area (even if there won't be other remnants). Northlands is much more generic, and Expo could be anywhere. Likewise, renaming Corona (a sharp, snappy name that also pays homage to the area) to the utterly generic "Warehouse Park Station" is a downgrade IMO. These names have gone far beyond the original reference to a specific place and are now more simply the word for a given area of the city. People say "Coliseum area" and "Corona" connotes a specific part of downtown irrespective of if its namesake still exists, so it's not like the words are meaningless.
If we're doing any renaming, it should be getting rid of the absurd preference for hyphenated names. Does the City realize that LRT stations can just be snappy and to the point? South Campus is not near Fort Edmonton (I know this is an old controversy), NAIT/Blatchford Mkt can just be NAIT, etc.