Sorry to hear of your health problems! Back in about 2005, not long after the original SARS made its appearance in 2002, I had a (now former) coworker who came down with some infectious disease that eventually attacked his heart and led to heart failure, likely similar to what you have experienced. Like in your case, they could not definitively determine what was the actual culprit. He eventually had a heart transplant 2-3 years later. These things where an infectious disease attacks the heart, while rare, have occured for many years and will continue to happen. I know it just sucks to be one of the unlucky ones to whom it affects!
I don't see a big deal about where the Jays play 30 'home' games in a contrived 'season'; and I think Buffalo, despite the substandard amenities and lighting, is sufficient for such a small number of games. The weather there in August and September is likely to be much better than Dunedin, so they should just go with it. Latest I saw is the Jays management is now looking for an 11th hour solution to play 'home' games in one or more MLB stadiums mostly at the prodding from their own players:
https://sports.yahoo.com/blue-jays-pitcher-says-team-looking-major-league-202745424--mlb.html
P.S. now if they don't get things back to relatively normal by next spring, then I will be irate and ready for a revolt!! Like said earlier in this thread, we need to come out of hiding and stop living scared eventually.