We don't know if we will put the Vnav advisories in future patches or not. I know the real plane have those features, but they where not as important as others to make function in the FMS and navigation of the real plane. For me was more important to dedicate time in a Holding page than in the Vnav one, because with the formula it is good to make the calculations decending or ascending. If we include the vnav advisories in future (that already have something when loading the SIDs and STARs) then of course we will add the ToD feature. But for now that is something we don't know if we will include, because we are fixing the small number people that find bugs.