Both maps are great. Stygian with the steep hills and the GREAT number of LO 'campspots' will have some fun PuG CTFs played on it. Sleepwalker might seem hard for some to gain speed on from bases (look ^) but it's still a really fun map. GJ! And I've found no issues whatsoever with the TDM mode, but I didn't have a lot of time to test.
but skiing in tribes is pretty different and this terrain does not work too well in legions.
I'm sorry but ^=BS. First of all skiing in L:O is much more 'flexible' than in tribes, hence all tribes maps and more will work for L:O. Also, I had no trouble speeding at ~180 without a RJ in the direction of the enemy base on many routes.
As an aside, seriously consider removing spawn protection. In competitive games, spawn protection is absolutely unnecessary: if there's someone camping spawns in a scrim or ladder match, that is entirely your team's fault. In public games, I can understand; in competition, though, there's no excuse. Make it a toggle.
Note that even though it is your team's fault, the combat just might move to one team's base. As usually it would put the 'defending' team at an advantage, there'd be a lot of 'surprise factor' present. You don't know where you'll spawn, you'll start on the ground and you'll be instantly vulnerable to all incoming fire. Unless each time you spawn you want to do an insanely quick 360+jet up combo to see if there isn't anyone pointing their RL at you, better keep the fresh meat.
I understand how it's 'entirely your team's fault', but goddamnit the advantage of having as many people possible at the enemy spawn area would change the point of TDM to leaving your base as quickly as possible and getting to the enemy base to camp there. +I can just see teams spawn sniping.
I'd be in one of those teams, promoting the idea.