The Cessna doesn't really look old but yes, small planes are definitely needed. And I'm not talking the horrible looking fighter planes that are coming out.
ANT (and me now) have been wanting WWI planes for quite a while now, the only thing is performance, any "realistic" plane made should be made so you cant turn 90 degrees in 2 seconds but it shouldn't take 20 either, stalling is another problem but I'm not sure its fixable.