@dt
Fall Protection - Don't know this one very well, can't comment much on it.
Thinsulate - Two markets, both mismanaged by 3M. Thermal is really an industrial spec-in trying to manage itself as a consumer business. Acoustic is really on trend, as weight reduction and the change in sound profiles for electric cars should help this one. Both have been historically under-invested in as executives couldn't look past 'fluffy white stuff' in looking at the portfolio. This will never be a giant, huge-growth business but could be easily managed to be a steady-growth high-ish margin business.
Architectural markets - 3M should drop this one, doing custom printed film for fake wood/stone/metal is not really 3M's long-term strong suit. The Asian market likes this stuff a lot more than the West, but still not enough to keep it around. I'd sell this one off. Housewrap (or say office-building wrap) is not a long-term fit for 3M, just not enough profit margin there to be interesting.
Reflective (Traffic) - In a tough spot, the market acceptance of something higher technology than DG3 really isn't there. Historically it has been a really good product line to enter developing countries with, but 3M appears to be withdrawing from geographies rather than expanding into them.
Scotchlite - Let it go, sell the brand off, it is fully commoditized, I don't see a way for 3M to grow it and the margins have been falling steadily for years.
Commercial Solutions - Two markets here I know decently.
The floor-care and cleaning products are still quite good and have tech overlap with other divisions. GDP-plus growth possible, but will be a bit noisy with business cycles. The danger is more full-service providers that can be one-stop shop for customers. I might consider both keeping it or selling it off, I think this one is a close call long term.
The branding business is a bit of a weird one, but ultimately it is a distributor sold product line with good 3M tech support. I have not seen the financials in quite a while so I'm not sure how those look. Classically this does fit the make it by the mile, sell by the inch (or foot) business model. Unlike the architectural markets business, this one seems to be much more global, not just Asia for growth.