Havn't tried legends in a long time, and I will give it a go here in a bit. How hard would it be to implement Andrew's T1 skiing physics?
Not hard at all. Just disable the "zero-friction" skiing in the player datablocks and you get a close approximation (or as close as possible with the different gravity and player datablock settings). However, the player animation while skiing does cause some "bobbing" with a higher ping. Could probably sort that out with new models, but I ain't had the time nor money to hire a modeller.
I released a "ski" tech demo using T3D and the same T1-esque skiing used in Legends on TW a couple of years ago, but no one was interested in remaking T1 with all the hype of T:A at the time.
Also, I recently released 0.4.2.4