I agree. I view this as infill too. The Hilton Garden Inn will complete the west side of this block of Highfield Street.
The killer app (so to speak) for the west end of the downtown core would be a convention centre (as you mentioned). The combination of a downtown convention centre
and the Avenir Centre would cause an explosion in additional hotel construction, more restaurants and new storefront retail, which would all in turn lead to increased densification and new condo and apartment construction in the neighbourhood. People would
want to live in the area.
I don't know what the Aquillini's have in mind for the Crowne Plaza block, but let's all hope that it includes a proposal for a convention centre........