Probably for the best anyway. The NHL still needs a few more years of pressuring governments for tax breaks as part of their standard operating procedure. And the arena is going to need a really well functioning LRT with all the bugs ironed out. If SNC Lavalin can no longer bid on govt contracts, i hope fixing all the issues with that doesnt become problematic too.
The catch though is it will likely be more expensive to build an arena 5 years from than it will be to build an arena right now. An arena at Lebreton is a great idea but I'm skeptical about whether anyone really wants to pay for it. (Owning it is a different matter). I suspect we are in for a long time at Kanata.