Riot, I think you're stretching this too much.
Making the VIP Passes solely obtainable through buying a complete pack is overkill period
Essentially for the players that could care less for the side goods you get and only want the chroma they're paying 1.3K RP which is 4x the regular price of any chroma in general.
Then you also aside from resources have to invest time/effort to obtain this chroma.
TL;DR : Make the VIP Missions scroll available for purchase outside of the pack, for RP.