yes. you can disconnect/reconnect grids to norns with no interruption
euro sync doesn’t have a perfect solution until we have crow finished. you can use nearly all of the methods that people use now for computer to euro sync. simplest option might be a usb-midi cable if you have a midi module.
all of these are no at the moment. some of them are easy/possible, others not so much.
i’d suggest waiting until the full mlr docs and tutorial videos are done (it will be a couple weeks) before jumping on a preorder, as the new mlr is an evolved concept of the original. i wasn’t looking to simply reproduce mlrv in a box.