Yeah I'm like one of two people who still finds single pivots interesting, but this frame is...questionable. That seat tube. The leverage curve. meep.
Single pivots will always have a laundry list of shortcomings. A lot of those can be mitigated through additional linkages, however the old school Orange/Santa Cruz bullet designs just literally have every possible shortcoming wrapped up into a tidy little package. They had the advantage of simplicity when people didn't know how to properly design or fabricate a full suspension, but it makes no sense today unless you are literally trying to build a $300 Marino.