Tyrell, Matra, Ligier, Prost, Hesketh, Benetton, Team Lotus, Super Aguri, and Honda in F1.
In sports cars I miss Ferrari, Matra, Rondeau, Kremer, Alpine-Renault, McLaren, Jaguar and Nissan (TWR)
In the WRC it's Peugeot, Subaru, Mitsubishi, Lancia, Toyota and of course Renault.
And Alfa and Opel/Vauxhall need to come back to all forms of Touring Cars.