Professional writer here:
I'm fine with "more unique" or "very unique." Think of a line of vases, each different in some way: one is an irregular shape, one has spectacular colors, one is sleek and made of metal, etc. Then, at the end, is a vase made of cheesecloth cast in resin, with embedded chocolate dragons, and wooden feed hand-carved in the shape of Mickey Mouse gloves, painted in stripes.
Each vase is unique, but that one is really unique.
"Mass exodus," OTOH, just irks me.