It seems like we keep hitting issues with topo scaling confusing people. I think we probably shouldn't change where (0., 0., 0.) is in any given channel layout, and instead ensure that our internal layouts are actually in head coordinates. I wonder if we could also just assume a head is e.g. 90 cm. That would make subselections of electrodes appear correct. A normalize=True (default) | False argument in functions that do such topologies could do it.

@jaeilepp WDYT?