Well it could be still a streak this year, making it 4 years in a row, but unless the bummers really improve 2015 will be the "fail" year. In all honesty, now that they are in the West, if they made it 5 years in a row I wouldn't be too upset. (And would be quite happy if it allowed Hamilton to make the streak 6 in a row in 2016).
Well 2017 should be Ottawa, it's the 150th anniversery of Canada and that will give them plenty of time to prep for a Grey Cup. I think 2018 is more realistic for Hamilton. 2016 is the year right after the Pan-Am games so the city might be a bit fun shy in having another fesitval so close by.