I don't play a lot of RP, and when I do I play kill, so take this with a grain of salt. I think yagura is probably better than enigma, with less parasite recursion going around, but still some, the 1cr is fantastic, and while enigma is an ETR, you have 2 lotus that can be enough of a tax over a nisei on the remote, and the credits saved on enigma can go into rezzing remote ice sooner, which means scoring faster. I like enigma though, so I'd actually do 2 yagura, 1 enigma 1 lotus, and just try to score faster/sooner. In my time playing RP glacier, I've found it entirely possible to score with even 1 ice and a nisei, especially with an active ELP.
ELP might be one to look at, runners are running more currents than ever, especially if Sol encourages people to play them if nothing else than to remove ETR from news hound.
Also static might just be bako, because it's blastoff ability is great incase you do run into parasites. Quicksand could also be a good replacement, criminals don't like it
I'm curious if some combination of vanilla, quandary, and ichi would be gear check-y enough to force out an early nisei mkII, and push RP back to rush territory (fast track).
Oh and what about interns?