The majority of "adult collectible" companies use the 7" scale not 6" so there's nothing awkward about the size, the 5" scale was very weird though. NECA, Diamond Select, DC Collectibles (except for Icons/Animated), and some of Funko all use the 7" scale for their figures. Pretty much every 6" scale line while collectible in the sense that you can collect them are not "collectibles" as the term has typically been used in the toy realm. The 6" stuff can still be played with by children and lacks in sculpted or painted detail when compared to the "collectible" market, the 6" lines are more universally approachable to the collector and player market alike with most if not all being marked for ages 4+. 7" scale stuff is not as universal, they have articulation for display more than play and most are marked as being meant for at least ages 13+ or even 17+ thus indicating them as "collectibles" and not regular toys. McFarlane pretty much started the 7" scale as the go to detailed "for adults" size figures so it actually makes more sense for them to return to it than to hop over to a scale which caters to a wider audience. I'm not saying the 6" lines aren't for collectors too since I have a bunch of them myself but they do look more like toys than the "collectibles" do.
Sorry if that read like a rant.

Totally fair. I guess I was completely leaving out NECA. I was thinking more the 5" lines.

I guess where I'm seeing it is that there seems to be a concerted effort to produce more 6 inch lines in the past 3 years. 2 separate DC lines, power rangers, halo, star wars, and a huge uptick in marvel legends, plus the rising popularity of figuarts, 6 in seems to be the way the industry is heading. Given the slow death of a lot of the McToys 7' staction lines in the mid 00's, and how derided they often were, I'd have guessed they would've moved to a more popular scale, since they're already jumping size for a majority of the properties in the color tops line.

Agreed, decide between a statue or a full fledged figure. This is in between and it's not horrible but choose one not both. I hate useless cuts.