I can only speak from personal experience but everyone I know with a Shimano motor has had problems - random fault codes, power cutting out, controller issues.
Shimano's distributor / warranty support in the UK don't appear to be very helpful which has resulted in more than one of my riding...
Did you check to see if it's the correct chain line on the spider that's been installed?
I took mine off to have a look, it's definitely a 55mm CL, it's stamped near the centre of the spider.
I think you may be able to modify / bodge the Shimano adapters to get them to work with Hope brakes but if you're getting new Hope calipers and rotors I'd just spend that bit extra to get the correct Hope compatible adapters.
I may be wrong but I don't think that Hope calipers work too well with Shimano adapters as they're a different design.
Someone else might have got this set-up to work and may be able to offer a solution.
Sorry, I just re-read your post.
If you're just replacing the rotors it should work, if...
Hello @thewanted
What size rotors will you be using front / rear?
You need to size the adapter for the rotor.
For example, I have a 223mm rotor on the front so I bought a +43mm Galfer adapter as the standard fox fork size is 180mm.
I've got 2mm Galfer Shark rotors on at the moment.
They are good and work well but they seem to bend easily, both rotors have a bit of a wobble in them that rubs on the pads.
I'm hoping that the TRPs will stay a bit straighter.