It will depend heavily on how Martial Arts works. If there's not a high enough cost, or worse if they're obviously broken (both serious flaws with SR4's system), we won't use them. SR4's were basically "Hey, free extra stuff!" and worse, there were two or three things you could take which were obviously far, far superior to all others. It was a heavily imbalanced system, PLus, the whole Gun Kata thing was amazing amounts of crap

As for Enchanting, as far as creating foci and stuff? No. Basically, all "ground up creation" stuff is off the table. Basically, anything that lets you get something for cheap/free is out, simply for balance sake. WIth the way Downtime works, it wouldn't be fair to every player (and creation skills would quickly become "must haves").
Bull