It's been standardized on something that doesn't intuitively make sense to me - two tags for the same product, vendor prefixing, and an unused acronym:
threat-management-gateway -> ms-ftmg
tmg-2010 -> ms-ftmg-2010
forefront-2010 -> ms-forefront-2010
(that last one seems like it's a non-change, unless every product requires a vendor prefix now.) To me, all these tags should just be synonyms for TMG-2010.
It might be confirmation bias, but nobody I know calls it ms-ftmg-anything, it's just TMG (worst-case MS-TMG, like ISA was and is just ISA or MS-ISA), or they just call it Forefront. Like people that call WinWord "Microsoft".
So in short, I think we've gone the wrong way here, and if those tags above are going to consolidate, they should all consolidate to the same thing anyway.