The reason why people left CAL/EVA is not Taiwan and its people.
It is the Airline.
If you want to go there, by all means go and you will enjoy it.
Nice routes, airplanes, decent roster. Taiwan is clean and convenient.
But do not expect anything. Stability, long term job, salary raise, upgrade, seniority, contract honoring, fair taxation. Training is another issue.
If you are with the family check out the fees of TAS (Taiwan American school) and the rentals at Tien-mu. For the local schools your kid needs to speak Chinese or you commute so you don't see your family.
Contract is only for few years and will not be renewed subject for the requirements.
Bottom line, you are an expat, replacing the cadet until he is prepared to take over.
You are not welcomed, you are required.
Act accordingly and you 'll be fine
L.