Currently, the only things you can win from events are gift cards for the shop. To increase the diversity of event rewards you could add event-only cars/liveries.
The event-only cars could be reserved for big events like the big tournaments hosted on British Assembly. These cars could be comprised of cars which have been suggested but have been rejected due to being too similar to their counterpart. Ofcourse these cars will have to be picked under the same quality standards which other addon cars are added for. These cars also cannot be better or worse than their counterpart in terms of vehicle stats, so they should have the same top speed, handling, weight etc. The only discernable difference should be visual.
For event-only liveries, these could either be reserved for special events which could be refernces to those liveries or for 2nd and/or 3rd places for British Assembly tournaments or similarly big events. As liveries can't change the stats of cars (atleast I don't think they can), we don't need to worry about that, just that they should be high quality.
The event-only cars could be reserved for big events like the big tournaments hosted on British Assembly. These cars could be comprised of cars which have been suggested but have been rejected due to being too similar to their counterpart. Ofcourse these cars will have to be picked under the same quality standards which other addon cars are added for. These cars also cannot be better or worse than their counterpart in terms of vehicle stats, so they should have the same top speed, handling, weight etc. The only discernable difference should be visual.
For event-only liveries, these could either be reserved for special events which could be refernces to those liveries or for 2nd and/or 3rd places for British Assembly tournaments or similarly big events. As liveries can't change the stats of cars (atleast I don't think they can), we don't need to worry about that, just that they should be high quality.