Illustrator - 1: Masking in graphic style appearance panel option.. 2: nudge in the transform effect

Depending on what precisely you want, you can use knockout groups for masking.

The best place for feature requests is UserVoice as indicated by Abhishek:

https://illustrator.uservoice.com/

Although not configurable, using the arrow up and down keys you can nudge the values in a selected field:

Arrow up increments 1,

Arrow up with Cmd or Ctrl increments 0,1

Arrow up with Shift increments 10

Hi @harv81,

Adding masking options within Graphic Styles and a nudge feature for the Transform Effect panel would definitely make workflows smoother and more efficient. I completely understand how useful this would be, and I'm sorry it's not available at the moment.

Would you mind posting this idea on our Adobe Illustrator UserVoice? Submitting it there helps the product team track and prioritize feature requests, and you'll also get updates if it's taken up for development.

Please feel free to reach out anytime if you have more questions or suggestions. I'd be happy to help!

Abhishek