The UI for Opentype is extremely difficult and time consuming to use. The entire thing needs to be set up like Illustrator, with one addition: PREVIEW TYPOGRAPHIC FEATURES (especially the stylistic sets).

This UI feature should behave just like the Fonts Menu: When you open the font family menu with text highlighted, each font you hover over previews on your selected text.

This needs to be replicated for Opentype and Glyphs. So once you open the dropdown for stylist sets or glyphs, each style you hover over, will preview in real time on your selected text or in a pop up menu.

Not only will this SIGNIFICANTLY IMPROVE USER EXPERIENCE by removing all the clunky impediments, it will also IMPROVE ACCESSIBILITY! As someone lightly vision impaired, it is extremely difficult to see small details in the font + glyphs menu.
Having the ability to preview the changes on highlighted text, allows me to see the styles at a visible scale!

Please Adobe team make these changes!🙏 It will make Opentype and Glyphs easier to use and more accessible to all. 😊

Also sorry if this request already exists - it's extremely hard to search and navigate posts. 😞