So I managed to find a pretty darn good ABH launch for 06a which basically takes you to the end of the map, like any segmented trick its VERY precise so it will take some time to replicate.
For 07, we can take the speed from 06a via edgebug and swing ourselves across the map. Keep in mind that Alyx may or may not spawn in the next map, no one knows what exactly causes her to not spawn but either way we need her for the helicopter battle.
If I can finish 07 then Ill try to plan out 08 but that damn helicopter and all of its exceptions, triggers and what not will be a time killer.
To do the swing, hold down A and slightly move your mouse to right during loading , then slowly keep moving your mouse right until you are straight.
I cant wait to do some segments :D!