It seems to me that MIA-TPE would be a very long, thin route, but since it would be either BR or CI starting that route, maybe they'd go for it. It certainly wouldn't be AA starting that route. I'd say MIA-NRT is the best bet right now.
Well, let see, just from the article...
A direct 17.5-hour flight between Miami and Taipei is possible, as evidenced in June 2017 when Miami International Airport welcomed Taiwan President Tsia[sic] Ing-wen.
But regular flights would require “payload restrictions” limiting the number of seats sold, as cargo and passenger weight would need to be reduced to complete the 8,628-mile trip.
“If cargo is at a minimum and you have ‘x’ number of seats you cannot sell, you’re already not starting off on the right foot,” Mr. Chien said.
In another word, not going to happen. If there's anything that would really push the flight over the edge, it'll be cargo.
And I'm not even sure if this is true:
Poor standings with China, Mr. Mangos said, have bled over into air arrangements with the neighboring Taiwan, whose EVA Air and China Airlines depend on travelers from the mainland.
“China firmly controls the number of cities and people that travel through the Taiwan hub,” he said.
While the 2nd part is true (Most mainland Chinese can't even transit at TPE), the first part is certain not true for transit anyway, especially with the much increased amount of flights between US and Mainland (Ask CX about how things are going for China-US transit traffic).
By a relative means, is Miami even more premium heavy than New York? Considering the additional distance, any O&D can legitimately go via US/Europe/DOH... I do understand the painful feeling of failing to see a whole chunk of map empty for 17 yrs... cause between 1997 and 201x (presumably 2), the only flight from CAN to US is to LAX... and it isn’t improving...
Except CAN has HKG as the giant in its backyard with tons of existing TPAC non-stops. And even within PRD, anyone south of Dongguan on the east side and Zhongshan on the west side can use HKG just as easily (if not easier) than CAN.
Transfer? Well... if I were traveling from Japan to S. America/ Caribbean, why not go to DFW or some random European hubs for transfer?
Or even DXB/DOH, at least going to Brazil (Which is by far the largest Lat.Am. market to/from Japan). Actually between LAX, DFW, and JFK, the major destinations are covered by AA or LA. The only place where MIA really shine would be Caribbean.
P.S. Yeah, they have been working on getting a flight to East Asia for how long now? Hack, even PIT got a charter to China, and still nothing at MIA.
P.S. Will see whether BER opens first, Baltia finally fly its first flight, or MIA getting a flight to E. Asia first.