Scale Project or doing the math is the best option. No easy way to lock axes and use an exact number for a single dimension otherwise. If you don't care about being exact you can hand scale with the Scale tool while watching the sizes change.

Not particularly. You might have to tweak values like Subsurface Scattering depth, or Camera Aperature. In general, if you're working on your own, you can work pretty fast and lose so long as you get the image you're trying to achieve. However, if you want to work in a larger team, or even to make your assets more useful to yourself across projects consistent real-world sizing makes it easier to import elements and have them Just Work™.

No super easy way to do that, at least from a UVs perspective because you can apply multiple materials w/ multiple textures, each with a different physical scale to the same object. That said, I'd start w/ some sort of Auto UVs so that everything is the correct relative size, then adjust your texture tiling settings until the material looks good on an element of known size. If you just want real-world sizing and don't care about perfect UVs, look into something called TriPlanar mapping; it was created to solve these sorts of real-world sizing issues.

Thanks so much for your comment & best of luck w/ your project!

That's a bit more than I can (or am qualified) to cover in a KZfaq comment. From what I can tell DJ Visuals Builder is doing a lot of different motion graphics effects/animations, and just using the shape of a box as a jumping off point. The Maxon Training team are putting out good content on Motion Graphics and have live sessions w/ Q&A. Might be worth checking out: kzfaq.info/get/bejne/prV2jZWIyr7Xf4k.html

I'm doing this as an outgrowth of my teaching at Cal Arts, so creating these evenings/weekends. To get them up to the standards of the Maxon Training team would take about 10x longer than the time I have to record/produce these. Maxon Training team definitely sets the bar, I've included links to some of your team's videos linked in the description.

same case for me :c

Man. I'm with you. Feels slow. I use it for 3d printing, but on a scene this would be painful. Xpresso is probably the way.

Nope I remember it in R12

FWIW, Fit Circle was added in Cinema 4D 26: help.maxon.net/c4d/en-us/#html/TOOLFITCIRCLE.html?Highlight=points%20circle

You might be in the wrong mode (Try model), or have a viewport filter on. Or, you've added a Scene Nodes primitive via the assets browser rather than a classic C4D primitive via the icon palettes (scene nodes Primitive's don't currently support the dots you're missing).

@@DononovanKeith Thanks for the help, i eventually found a solution. I needed to update my NVIDIA graphics driver. After updating and restarting the program, it appeared!

When it works I'm gonna miss u bro

Geometry Only removes all viewport cruft. You'll need to manually build your viewport filter settings to maintain the HUD. And/Or generate the burn-in as a post-process in After Effects.