As I said, they're slow for a reason one of the main dynamics in 6v6 is getting to the middle as fast as you can, and when you have shortcuts that disrupt the class order, the whole thing would go a bit higgledy piggeldy. I mean look at Well, everyone gets into the point at the same time, and it's nowhere near as memorable a mid, as say Granary, which can be a long and epic battle.
Thanks for your input
Best bet is to have a sophisticated set of area gates, set to particular triggers and/or timers, that force the 'whole' team to stick together.
Doesn't matter how fast your are, you can only pass through a gate when it opens.