Putting Harpoon in VLS wastes VLS cells. Harpoon doesnt need VLS, and can be carried at no cost (little extra displacement, etc.).
It a tack-it-on sort of weapon.
Best to use VLS for munitions that need that.
This seems an anti-air optimized configuration, which would be useful for that purpose I think, unlike the previous designs. If you need a ship to do everything then you need a bigger ship.