Keep the 15 year old rule cause I want to be able to buy parts and upgrade/fix my car as it gets older. Cheap OLD imports are a good thing, cause I might like a model that only becomes affordable to me under this scheme.
Most cars depreciate, you pay a heap already for maintaining your import, so its not cheap to own cars. Don't buy a car if you don't want it to depreciate.
If you want to maintain your high priced car you can keep upgrading to a newer model and should because you don't mind paying more for a car and for compliance and the fact that it is rarer because nobody can afford i t.
Just worry about the fact that the next car which could be a replacement after you smash it will cost more! If you want to spend more just buy a newer model. It isn't fair to say to people that you can't bring it in.
The price of repair parts goes up too!
As for paying the gov't more money for compliance fees, ARE YOU JOKING - they already rip us off with speed cameras. Most people are buying 15yo imports because they represent higher technology for lower price.