Why not all of the ideas?
- If Mercedes wants to run a 3rd car just let them do it!
- If that rich guy from VIRGIN wants to run 1 car using a Dallara chassis with a Ferrari engine let him do it!
- If FIA/F1 could make it easier for more teams to join.. then DO IT!
- Oh, a dutch guy wants to rent a "one year old F1 car" to race in Zandvoort? Cool! Bring it!
(These "one race only" entries are also cool! Both "random privateer" or a 'full time team' just renting cars for national drivers with enough license points, like Hulk having a car to race in Germany, Nakajima racing
in Suzuka and an Indycar champ racing in COTA)