Roger that! Tis a beaut, eh? But I am speaking more to DESIGN, not individual parts.
Makes more sense now, huh? Just by adding dry sump hardware these are amazingly small and lightweight packages that fit in very small/low hoodlines, Example: Corvette.
You can always make a case for complexity, but I'm a high-miler who wants my motors to run nearly forever. Not too many modern Hi-po engines seem to fit the bill.
I would say the LS7 doesn't really fit that bill either, though.
The complexity (speaking to 4V and DOHC, correct?) results in valve-trains that are stable (barring stock valve springs) to 8500+ rpm with fairly inexpensive stock parts and a massive mid-low lift air flow velocity advantage.
The LS7 does what it does because
of the expensive, race-level parts it contains.