I think it would be like Valvoline Synpower Oil Treatment (VSOT), but not thick like VSOT which was about 100cST. Rather like VSOT (old formula with all the goodies including zddp, in case they have neutered it lately) but about 15 or 20 cSt.
Other than that, a concentrated Redline formulation in an ester base would be nice and I heard Redline is considering making an additive.