I think there's potential in the future to expand the network of Stagecoach services around Matlock, with a focus on linking to the X17. Maybe take over the 110/111, a Wirksworth-Alfreton/Ripley via Longway Bank and Crich route, make it seem like an intergrated and fairly extensive network. There's villages like Kirk Ireton which would benefit from any service, and could intergrate in.
There was a time when Stagecoach didn't seem to want to bother with this sort of service. That said, the council are paying and if no-one else has the capacity to bid then I guess it's a fairly safe contract to go for.
I believe Hulleys made proposals for improving the 110/111 which weren't taken up. I think these included a direct bus from Ashbourne which seems like a sensible option. From memory, during Covid they operated as a single service which served all villages, rather than two alternating, and it didn't add a whole lot to the journey time. Going back to that and running a direct, fast but would seem a good option. (Maybe extend the 'other' X17 to Ashbourne?) I'm also surprised they don't interwork with the 172, although that also could do with some love as the 2h20 frequency doesn't make it that attractive.
I do think back to a plan Derbyshire County Council put out when first bidding for BSIP money where their aim was to set up bus corridors and have anything off them dealt with by DRT. While their version was quite extreme, I do wonder if something similar would offer better value for money here. Link the major towns by frequent buses and set up a depot in Matlock itself for a DRT-style operation. Van-based buses probably suit these routes better and, other than at school times, capacity won't be an issue. Running E200s from remote depots can't be offering the most economical way to serve these communities and that in itself may be harming provision across the wider county as the money saved could be spent on improving services elsewhere.
It doesn't even necessarily have to be a DRT. If 'interchange' locations could be identified with decent shelter provision made then villages could be connected with main road routes and save the time to duplicate those routes in to the bigger towns. Changing is always a bone of contention, but if you could double provision for smaller villages at the expense of a change I think it would be a positive move.