Thats where mods come in. I always played mods that sped up the gameplay which is why Legions felt right in terms of skiing and getting around. Especially without needing a vehicle to get to the other base. And if you ever talked to one of those old grumpy t1 players they will probably tell you "Tribes was slow as molasses." And of course it was because they were a most likely a base player. I think if Legions ended up more like a t1 base clone with better graphics a lot of the community which came from the first three installments would probably cringe(especially without the ability to mod). A mechanic which a lot of tribes mods seemed to add somewhat universally was some kind of extra speed boost whether it came disc boost or a shockwave cannon.
We rocket boost and grenade boost regularly without any mod whatsoever now in legions. You know the cluster grenade? was available for the T2 Renegades Burster(not saying it was stolen, saying it was done previously years before). How about the Satchel Charge in T2 Base? Done first in a Tribes 1 mod. So on and so forth. Dont know where the inspiration came from for Legions but I am taking a wild guess a lot of it came from Tribes even though Legions is NOT Tribes, but it is, but its not....
All that bs said if the new game is not modable and has no map editor then that presents a possible problem. Microtransaction to buy maps, game-types, armors, weapons, priority access, or whatever the hell they plan on is leading me to believe this game is just an elaborately re-skinned Global Agenda with a new menu that says "TRIBES" so at this point I would not keep my expectations high. Which means i am betting the game is 0 percent modable.
As Nept also noticed, that video doesn't show us anything except art which was intentional and not an accident.
