What is the point of this service? The 159 was withdrawn a few years ago so any custom will have long since disappeared. The route will be effectively all new connecting places with nothing much in common. In the same area other routes are being withdrawn, eg the 7 between Atherstone and Measham and the 125 between Coalville and Castle Donington, so why is this coming back?
It is hard to see any purpose. Who is going to want to go from Coalville to Hinckley at 06.40 or come back at 18.30? Arrival in Hinckley at 08.05 is unlikely to be for schools. A bit early for workers and the returns are at 15.30 or 18.30. Market Bosworth has schools but the arrival times here (07.27 from the north and 08.35 from the south) are too early and too late, in the afternoon only 16.08 to the north might make sense but unlikely. If you go shopping in Coalville you arrive at 09.35 and leave at 13.25, sorry, but with the greatest fo respect to Coalville, no-one will want to do that. There is already a service between Ibstock and Coalville and between Barlestone and Market Bosworth and the rest of the route is fresh air. And this is a route where Arriva actually have sub-depots at both ends.... so it is going to be run by Centrebus!
The more pertinent question in that comparison is how the 7 & 125 (Coalville to Castle Donnington) were kept when the 159 was allowed to vanish given the 159 was a much busier service than either of those and for several years under Roberts it ran commercially. Both of those routes have been replaced by Fox Connect DRT services I believe (except the school run on the 7 which still has a regular bus).
The big complaint when the 159 vanished was around college students travelling into Hinckley, and they appear to start fairly early (Leicestershire schools in general are often early starters & finishers) so an 0805 arrival isn't as unlikely as all that given the compromises you have to work with in designing a timetable with limited resources.
The big point beyond that I suspect is getting people into Hinckley & Coalville for their supermarkets, even the 153 from Market Bosworth to Leicester doesn't pass a decent sized supermarket (though it does get close to the Tesco at Braunstone Gate but there isn't really a decent one in the city centre) so linking to the Sainsburys at Hinckley & Asda at Coalville (the bigger Morrisons is a bit of a hike) is an important link. There are a number of villages that lost their bus services when the 159 was withdrawn or the 153 simplified so there are some gaps to be served.
Leicestershire have been restoring and improving services (though some of these via Fox Connect DRT so some services have been replaced by DRT whilst new services have been added) recently and this is all part of that. They may work and they may not but this is a logical corridor to try and there was significant demand from many of these villages to both Hinckley & Coalville historically so it is not illogical to put something back when you have the money to do so and see how much of that old demand survives. The old 159 used to regularly arrive at either end with double figure loadings but whether that demand has survived and whether the reduced frequency can restore it is less clear.