You should try building a Westfield only to get it written off on it's first track day and have to wait 2 years to get it all back together again. That Sucked.
Back on topic, when you get it back, regular driving helps them stay reliable. Also, have some faith in the dealer as the issues are due to lack of use not the dealer not knowing about them. People want a low milage car but forget that rubber/seals/electrical connections all break down with no use.
I purchased a used Ferrari, OK only a Mondial T but it was my first Ferrari and i loved it…..but it had sat for nearly a year with the dealer and probably 12 months with the previous owner before. The Air con packed up more than once, the sunroof leaked, rubber seals failed, handbrake cable fell off, even the front bulk head split as the wiper motor had fatigued the metal, causing the wipers to fail in north wales in the rain. But the dealer sorted them all out and even today i keep in contact with them as it was not their fault.