Yeah, you can tell I didn't test some of those dropdowns at all. Will fix. As for your suggestions:
- I haven't actually figured out how to do that yet, but I agree with the sentiment.
- I wasn't sure what to do there. If I only had one line -- the checkbox itself, with the label on the right -- the spacing would look weird compared to all the other parameter input types. Putting no text on the right of the checkbox at all, or something generic like "True," also looks weird. Nothing really looks right.