I was going to go ahead and buy it this morning, but the Buy Now links don’t seem to go anywhere even if I bypass my VPN and turn off uBlock.
Oh no! I’m using Paddle for checkout, so that’ll need to be whitelisted, but if you’ve got uBlock disabled… If you’re familiar with using the web inspector/debugger in your browser of choice, could you see if any errors show up in the JS console?
Here’s an example of working with presets in Maschine.
Seems like my and NI’s assumptions were at odds here – I assumed that hosts generally provided at least passable preset management, and NI assumed that plugins managed their presets internally. I postponed implementing a full preset management interface in Cadmium because I want to set aside enough time to really get it right, but somebody else recently commented that just some next/previous buttons for stepping through the presets would be enough. Strongly considering doing something in that vein as a stopgap.
Going to address a few of your earlier concerns here as well –
The red modulation destinations or headers (e.g. lfo1) tend to turn black after being clicked on. It makes them harder to locate later (at least at first, until you get used to where everything is).
Especially from the screenshot you’ve posted, it seems that you have an AMD GPU. Am I correct on that assumption? If so, that’s a known drawing glitch and one I’m currently investigating. One of the downsides of doing a UI all in OpenGL is that I’m largely at the mercy of the GPU vendors, but honestly AMD on Windows is really the only issues I’m seeing anymore. At least, until Apple removes GL entirely. 
The labels for modulation destinations are just too small to read. Some of them I can make out if I squint, others I have no hope. If the GUI were resizable or the text was just a bit larger it’d probably be fine, at least on my monitor.
Noted, and scalable UI is definitely on the roadmap. I have to do some plumbing to do in order to enable resolution-independence, but it’s on the list. Probably Q1 or Q2 next year.
It’d be really cool to be able to modulate modulation – for instance, have env2 control the amount of modulation that lfo1 is doing to theta.
Also on the list! This one’s embarassing, actually, because the real reason it’s not there is just because I ran out of space in the UI. Got a UI overhaul planned for Q1/Q2 next year (same time as the DPI independence) which will also let me add controls for unipolar/bipolar modulation signals (currently they’re all unipolar except for the sine LFO, which is bipolar).
Is there something planned for that space to the left of “Global Distortion”? 
Short term? Pre/post filter routable sinusoid sub-osc and noise “oscillator”. Longer-term, the UI’s going to be reorganised pretty substantially.
-w