So you know when you go super fast after getting a 6 kill streak; why not have a server where it's always on? It would be a much faster paced version of gungame and have quick turnover between maps. It'll have a higher skill cap since it'll be harder to lead targets and provide more maneuverability to evade shots. You could even have a kill streak bonus where you go even faster (perhaps per kill rather than @ 6?), requiring more skill to control/aim.