Yeah - I don't think there is any question that Lich combo becomes much easier to swing if you add Ice Age. My 93/94 list (which I didn't post) also ran BoPs. But the best route is probably just make it like MirrorBall, running max Sylvans, and a bunch of Mirror Universe, and try to eventually combo out with Lich/Fastbond/Dark Heart.
I really hope people have a much better understanding of the possibilities for combo after reading this. It's a pretty uncovered area of Old School magic. It's also hella fun.