Better sensor? Hardly! ( see how many complaints there are about the visible grid or red dot, for example)
Bigger but for what? Bigger prints? What was the biggest print you had done in the last 3 years? Lager than 2 x 3 meters ( because that is what you can print in gallery quality with your 16MB).
I find the “ bigger sensor because I can crop” an incredible argument. Isn’t it better to think more about making pictures? Well, of course there are those who shoot hundreds of the exact same picture.
I shoot little less and think more. That’s better.
There is a profound difference between using DSLR which has a mirror to focus and Mirrorless is that the EVF acts as a light amplifier.
So, to a certain extent ( unless you are really shooting in the dark ... what’s in an idiom!) it makes no difference if you shoot at f4 a lens that has that as maximum aperture of 1.4 in the way that or both at f 4 they will all look the same on your evf.
