I've suggested something along those lines for years. No point running a proposal for something the team doesn't see the value in, it'll likely not be implemented. To be fair starter sets would probably be more relevant with a marketing push and maybe a new core set, but yea I've been saying this since chaos legion was in presale.
If someone wants to write one up, I don't mind helping, just don't really know if we want to get people's hopes up or waste the funds if the team will either say no or not prioritize it. For what it's worth I obviously very much support some version of starter packs.