To me, mirrorless format is superior. Anyone buying a new camera is probably taking a look at the newer models.
I shoot (or used to) with a DSLR, but I have to say that mirrorless is just superior. Much less bulky, fewer moving components to break, better performance. You can pry my shutter sound from my cold, dead hands, though.
I think for the most part I'd agree with you, there's definitely a lot of upsides in mirrorless systems, especially in terms of flexibility. I will say though that the screens in mirrorless EVFs are often lackluster in comparison to optical view finders in my opinion. In particular frame rate of the EVF is problematic for me.