Nope, not odd. 27.5 still has a ton of bike, tire and wheel support. There are new 27.5 bikes coming out now as we speak. There is a reason for that, people still demand 27.5 bikes. 27.5 seems to get up and go for technical climbs, easier to navigate on tight switchbacks, easier to correct when picking lines, and so on. 29s are faster, but not all of us are racing in the EWS.
That being said, if I were to pick up a bike, I would stick with it assuming the fit is okay. I am not sure why you feel like you are on top of the bike if the reach is okay. Is the reach off? Do you have a dropper post to shift weight around during descents? There is a little bit of "on top of feeling" with most bikes when the post is raised for climbing. It's just the way it is. Bike Mag and others call this the "hover bike" feeling.
My current bike is a 27.5. My next bike will most likely be a 29...but the bike after that might go back.