your criticism is valid, I am a tad overworked due to the popularity of Serum.
This indeed leaves the other software in the backseat for the time being.
I do have longer term plans for everything, which is why I have chosen not to discontinue anything.
The development on Serum should fold back in to the other plugins eventually, but of course there is a bridge to gap there from technology to (rebuilding) product.
Nerve is 20 years old and the code is very hard to maintain, as it's written in a very direct and low-level way.
It needs to be rebuilt, I would not quite say in entirety, but pretty much.
Because of this (and Serum keeping me well occupied) it isn't (directly) being rapidly developed.
Of course that's not an ideal situation, to avoid neglect, I tried to contract help - I had a very unfortunate experience hiring help to rebuild Nerve, I suppose it is unprofessional to air grievances, but I feel it is worth mentioning as it just isn't the case I don't care about the product or something like that. I spent two years (paying at one point a team of four people) and a lot of my time (discussing etc) and ended up with nothing (the entire story is actually pretty awful, but I can partly blame myself for poor management).
So for now, as for the resizable interface, M1/ARM, VST3, etc, this is all beta feature available to customers.
Most of the VST3 quirks have been resolved and I'll probably formalize releases at some point here.
Anyway, your points are valid. There is a bit of a "product on life support" right now and the future definitely isn't certain.
I don't care to discontinue anything, or start getting emails asking to buy something discontinued, etc.
My priority has to lie with Serum, and making sure customers of all software can use it to satisfaction.