Markup-Attributes VS NaughtyAttributes

Unfortunately, attributes can only annotate members or types, not scopes. NaughtyAttributes, as suggested below, is excellent, but I find MarkupAttributes to be even more elegant -- just one attribute is needed for a foldout group, as opposed to the same attribute on every field.

Markup Attributes - Does layout and grouping of fields using attributes. I find it's styling to be the most inline with native Unity, and most likely what I will be in my next project. It also supports material editors. Overall it is quite light weight, and good quality.

Here is the link: https://github.com/gasgiant/MarkupAttributes

NaughtyAttributes is a free plugin that allows you to do so. By using attributes you can make your fields a lot easier to manage. For example [Tag] is an attribute that allows your string to be directly linked to the corresponding tag.

In Unity, you could use NaughtyAttributes and then use the [Required] attribute to indicate that a value is mandatory.

NaughtyAttributes https://github.com/dbrizov/NaughtyAttributes is amazing for quickly and easily customizing script inspectors without having to resort to a full custom inspector GUI

Naughty Attributes is your friend

It's a professional team of ~15. Being able to customize the display of data within the Inspector makes it much easier for less technical team members to tune and create.

I personally love Naughty Attributes: https://github.com/dbrizov/NaughtyAttributes which makes it easy to add inspector buttons to functions.

I went and looked for the open source version I mentioned - https://github.com/dbrizov/NaughtyAttributes

For Unity, I strongly recommend something like NaughtyAttributes to help expose your data in the Inspector with better widgets and validation. (There are paid alternatives too. Odin might accomplish a lot of the same?)

There's also free alternatives like naughty attributes which has a HideIf attribute too