I see that Airfix now have a series of 'models' called the QUICK BUILD range which are less complex but similar, in that they are snap together components "compatible with other major plastic building block brands". There is a Spitfire, P-51 and Bf-109 in the series, along with a few jets, cars and tanks etc. I saw a couple in the local Warehouse.
To this very day, the kid who used to bully me at school still takes my lunch money. On the plus side, he makes great Subway sandwiches.