Had one over 3 years (4 in June) the following has gone wrong and needed replacing,
A taillight.
Perfectly happy being a daily driver, clutch is not heavy, and it behaves well if you cant be arsed to put your foot down. Just make sure to get a REV3 or above, which for £5-6k you will.
Parts are easily sourced, most parts are identical to the UK counterpart, and the engine bits are the same as a late celica GT4, toyota UK will happily service your car. Reliability wise the only trouble ive ever had was when my old battery was on its way out, changed the battery, now been fine for over a year.
Amusingly I recall you saying my car had a toyota sewing machine engine in comparison to your porsches