Still, the previous versions brought corona pattern and slicer materials, which are AWESOME.
Enmesh I think it's better though as it supports overlapping and displacement AFAIK.
This is exactly what I mean about things existing elsewhere already or they're just half baked in their current form/on release. There's a thread on here at the minute with caveats about slicer. And as you said Enmesh exists and has better functionality. I would be really really interested to hear someone sell Corona to me today if I was a new user. Originally it had a tonne of stuff in it's favour as USP's, hence why so many people made the switch. Today not so much. I'm struggling to think of one thing that Corona offers that I can't get elsewhere.
Looking at the home page it looks like it's selling points are as follows:
Ease of Use - "Render Setup is as easy as pressing Render" - this isn't technically true - there are a tonne of caveats/workarounds sometimes in order to get the result you want. Also I had to switch back to VRay not so long ago for one job. That was pretty easy to use these days too.
Affordable - "We aim to keep Chaos Corona affordable and accessible to as many people as possible, without compromising on its development and features." - Ahem, please see entire thread above.
Part of an Ecosystem - "As a Corona user, you are backed by the award-winning Chaos family. Expand your capabilities with Chaos tools guaranteed to integrate smoothly with your favorite render engine." - I'm assuming they're referring to Cosmos and Phoenix here which I have zero experience with, but from what I read, Cosmos is littered with bad models and I've seen a few threads on the Phoenix forums with 'Corona compatibility' issues. The Corona Converter is a mess and far from smooth. No Vantage unless converting to VRay first. So ultimately you might as well pay the little bit extra for VRay in the first place as that seems to be much more smoothly integrated with the 'ecosystem' already.
So really what is the selling point as of today? Why would one choose Corona from the off these days?
I won't get into the fact that each new release results in something breaking from the previous release i.e. sun targets, curves in tonemapping etc etc etc