I'm not gonna say 100% no, but I'd likely not be picking these up...
I bailed on 12" scale because they were sucking so hard... Now SS is great, but price keeps me from getting into those and still being dedicated to 3.75".
IF 3.75" somehow folded and 6" were introduced, I'd have to see what was offered... Like OCB said, sculpts could look horrendous if Hasbro is doing them while figures like Fett/Vader could be great.
However I'd also be very tempted to get into SS 12" figures instead (if 3.75" weren't there).
If 3.75" was going on as always though I'd probably just say F it and not buy into this stuff.
I'll admit I'm tempted to buy new unleashed 2" figures from time to time but I've manaaged to stay strong... I'd probably be the same on new 6" figures. Hasbro needs to just be making the 3.75" as good as they can... They have a super articulation format that is REALLY ideal in this scale but they refuse to even make knee, elbow, and wrist joints "standard" in the modern line... I feel the more they spread out scales/lines the less they focus on the bread and butter, so yeah I'd probably just be that much more against a 6" line even... Count me out (as I've sat here and rationalized the whole thing while I typed this).