I think LKS was quite distinct from TKS. It was basically the same aeordynamic shape as Shuttle/Buran just scaled down. It did include a TPS derived from that used by TKS.
I was meaning the internal systems - apparently LKS shared many systems with Salyut and TKS.
Not in terms of numbers (and engineering without numbers is just opinion), but I came across several mentions of how the cost of maintaining Energia's large LH2 infrastructure was a mark against it (probably similar to concerns over the infrastructure needed to support SLS). Of course the infrastructure needed to support the fueling of large ET-sized tanks and testing of multiple RD-0120 engines for a rocket that only launches every couple of years is of a different scale to that needed for relatively small upper stages.
Reading both Soviet and American histories on rocket development, I get the impression that new launch pads are pretty expensive, but I've never been sure if a new launch pad (for a Zenit with an asymetric booster like in the picture you linked to) is cheaper than adding some LH2 infrastructure to support LH2/LOX upper stages. A Saturn IVB sized stage with around 800 kN thrust on the Zenit first stage should be able to give slightly better performance to the Zenit+asymetric booster.
fasquardon