That's certainly something we agree on. If T45 was equipped with (e.g.) SMART-L, APAR, SM-2 & ESSM instead of S1850, Sampson, & Aster, I'd want it to have some of its Mk 41s strike length (probably not all, for reasons of weight, volume & cost), to permit both cruise missiles & possibly ABMs to be carried. Future-proofing . . . Since it has PAAMS, I'd like any additional VLS fitted to be Sylver A70 instead of more A50, for the same reason.
One advantage of Sylver: as a trade-off for the lesser variety of weapons which fit it, you get a much lighter and rather smaller launcher, so you can put a few more of them in the same space.