Actually, the i1Pro2 should arrive on the brown truck today but I have yet to decide as to whether to keep it or return it. It is a
fair chunk o change (I found a NIB one for 25% discount) and while it'd be fun to play with and tweak to no end, I need to balance
that relative to the CM Photo I already have.
It seemed to me from a logical point of view & lots of reading that if the display illumination is significantly off from the profile's
built-in illumination, that a profile made closer to the display illuminant would be the way to go (simply by using the illuminant dropdown
in i1Publish s/w).
So you're thinking about building light source measurement into the print profile? You just bought an i1Pro2 right? Goto town! I think it's a rabbit hole but we all have to feed the OCD every now and then. We all have to find the right solutions that makes sense for us that may not make sense for others.