Won a 12 person GNK winner with this variant of Off the Grid from KoS by @LSK
Only mods are to the ice, Seidr Adaptive Barrier is MVP. In any deck that the goal is to make a taxing central (or remote if you really need to) Seidr is strong. By itself it's a slightly more expensive Wall of Static. With a partner it's a Bastion. With any other ice after that it's strictly better. And stacking more than one Seider on HQ with a Fairchild 3.0 and/or Ichi 1.0 makes a really taxing server to make that Crisium Grid stick around.
One notable game, the clinching game that won me the whole thing in fact, saw me start off very roughly. I had limited Ice, no OTC-CG combo, and the Leela runner had been pressuring me with all 3 Fisk Investment Seminars. At this point I was holding 5 agenda in HQ, all my Jacksons and Preemptive Actions used. The runner checked Archives and found 3 agenda (all my agenda are 2 pointers to the runner) so they are at 6 points. I scored out one via a biotic...and promptly drew my last agenda. So there I was sitting with 5 agenda, a taxing but not crisium'd HQ, and a weakly defended R+D. Thankfully I did the math and realized out of all the odds, there was ZERO agenda left in R+D. My opponent reached the completely reasonable conclusion that all they had to do was pound R+D until they won. They were not rich enough to risk single accesses on HQ without good reason, so they spent the rest of the game hammering 2 cards into R+D each turn! Perfectly understandable. How I managed to keep my poker face the whole time I'm not sure. It was nuts. I finally pulled out the OTG-CG combo and completed the score-out over a few more turns.
Never. Ever. Do I want to be holding 5 agenda in HQ again. Especially round 5 of a long tournament. Uhg the stress almost killed me!
came to the same conclusion with the Seidr Adaptive Barrier while playtesting - so gratz on ur nice results with it :D still i would not cut the excalibur...