I think technology scaling give more disadvantages to the analog design area. Take for example, the headroom is less, so we need to increase the size... also, the intrinsic gain is lower as we scale the tech... what do you think guys???
Without any doubt, the scaling ads a huge amount of problems. With the scaling the speed increases only, instead we get a lot of other problems such as gain, mismatches, transconductance
A very important pro is that you can use digital calibration to fix the analog problems since a few thousand gates are not going to change your size by much anymore...
That is if there is no speed limitation. If speed limitation in some circuits you can trade more power for this filter. Or finally decide to use multichip solutions. I see it as a very popular trend to use multitech chipsets.
I remember ther was an article than depending on the specific analog function there is performance max tech, a power min tech and a cost min tech.
So depend on the application and usage what is the way to go.