I admit to the same feeling. I like akeuomorphism .. but as with most, we probably got carried away a bit. What I liked about the flat design era (not flat design itself) was the typography - you could suddenly use any typeface you wanted because displays were all retina! What I want is some kind of wabesabe design ethic that have the richness of texture and flavour (which is part of what the OP is referring to as "fun" I suppose). The digital world has been getting incredibly dull and monotonic these past several years.
> you could suddenly use any typeface you wanted because displays were all retina
You're thinking only of Apple land, right? Most displays in the world are still 1366x768 and 1920x1080, and huge fonts and widgets everywhere is exactly what I'm not going to miss about this era.
On mobile devices. My recent two (relatively) cheap ($200 range) phones have both been retina .. but yeah apple drove the retina evolution and typography benefited from that greatly I think .. on mobile devices.
