Correct - Manchester has three trains an hour to London, but one goes via Crewe and the other two via Stoke
There's no guarantee that *all* trains from London will run on the HS2 lines all the way to their destination (or even that anything will be built north of Birmingham), so we may see some using HS2 as far as Birmingham but then still serving "local" stations like Stoke
I know the area well,have relations there,
kidsgrove is of course a junction, with wires to Crewe & Manchester,it and
Alsager especially are villages,Alsager with two trains per hour each way served by two tocs),Kidsgrove itself a larger village enjoys more, with three tocs using the station, Stone is on a limb with a(LM) bus service from Hanley to Stafford and will be the loser if LM to London trains pull out( all bus only)., joining wedgewood with no trains.
As for the five towns service to London who knows.