Oh please, no. The fact that every VST maker creates their own custom GUI from scratch was the best and worst thing to happen to VSTs. All of a sudden I have a gazillion different plugins each with their own idea of how user interaction should work, meaning I learn a new interface for every single plugin.
At least a wall of homogenous sliders doesn't require me to learn how the widgets work.
Sure, but one doesn't have to reinvent the slider every time to do more than just "list them". Grouping elements, maybe even color coding groups, graphical indicators along with numerical values, all those things go a long way, and don't preclude standardization of the input elements themselves. Maybe they'd need to be more customizable.
> At least a wall of homogenous sliders doesn't require me to learn how the widgets work.
That wall is available in many if not all VST hosts, you can still work with the raw parameter list; and I have to say, I for one do not prefer it, at least not for any plugin that has more than 5-10 things to tweak. Except when I know them by name and can filter the list with a few keystrokes, so for that and other reasons I think a normalized is also useful. It doesn't have to be one or the other.
At least a wall of homogenous sliders doesn't require me to learn how the widgets work.