I think the walking is silly. As for replanes, why not make a 2 min replane delay for death, one minute for bail, and no penalty for ditch? Probably not appropriate for beginner arena(s) but for advanced pilots it should make things more fun knowing that the pilot you just knocked down won't be able to fly for 2 minutes.
Who knows, might make more people interested in keeping a high kill/death ratio also.........