Taiwan has nothing like Malayia's retirement scheme for foreigners. In Malayisa you can get permanent PR, the ability to buy real estate, and coverage under the national medical scheme if you can show you have a retirement income of more than 1500/month. I think it's called the MyMalaysia scheme or something like that.
If you're in government, your defined pension will definitely be more than enough to qualify for this. Hell, if you are from the US, your maximum social security benefit after retiring could also easily cover this or some national program like Canada's national pension program or private RRSP program.
To my knowledge, Taiwan has nothing like this. Then again, I think it would have a hard time competing with Malaysia for the following reasons:
(1) cheapness--Malaysia outside of KL is pretty cheap (cheaper than Taiwan for sure).
(2) food--Malaysia wins hands down.
(3) infrastructure and environment--Malaysia is cleaner with better developed infrastructure etc.
(4) climate variety---even in the hot of summer in the lowlands (hot and humid), Cameron Highlands etc. is way cooler (22 degrees).
(5) medical--Great medical coverage where English is spoken widely.
(6) close to first world Singapore and touristy Thailand.
Of course, the downside is that certain states are more fundamentalist, and that the government panders to the Malay majority sometimes at the expense of the Chinese.