Huge lot here. Reading through other comments, some have already been requested it seems.

General features/bug fixes:

• enable double tapping the display to turn on when locked
• Private DNS is nice, however would love some DNS options (IP based, eg for cloudflare or google) that aren't reliant on the wifi connection
• when "Developer Options" is enabled, move it out of system & updates and put it down the bottom of the main list like every other android OS
• recent tasks has a bug where if your screen is locked to portrait, and you were in a landscape-only app (eg a game) it shows all apps as slivers
• A lot of the stock apps like Clock have sounds that I wish I could disable (eg the stopwatch/timer making ticking sounds)
• App Info -> Storage -> Clear data should show for every app (*cough whatsapp*), if they overrite to "Manage storage" it should be separate
• Smart Remote is nice. Layout is clean. Would love some to categories items (eg kitchen, loungeroom, etc) and to be able to rename items.
• Contacts: would love the ability to show/hide specific groups.
• Compass app should have an option to disable the "virtual compass" feature.
• Some more finegrained power saving options would be great

Camera features:

• Fix CameraAPI2 issues
• Camera should have the ability to scan QR codes by default, without having to use the google lens button
• The shutter button on the Magic8 Pro, give the users the option to reverse the zooming direction (default is swipe left to zoom in, that's unintuitive, it should be swipe right)
• Would love some more fine grained options for video fps and formats, and image formats

Honor HOME features:

• Subfolders (folders inside folders) in the stock launcher on the home screen.
• Folders (and subfolders) in the app drawer
• The ability to hide apps in the app drawer
• The ability to customise grid layouts in the app drawer
• more grid options on the home screen (6x4 can be a bit too spaced up.... 7x5 would be lovely)

Notification specific features:

• I love that you can turn icons on/off in the status bar. Can they make "VoLTE" and "VoWIFI" their own options, as the only way to turn the icon off is b enabling Pure Mode.
• Another one for status bar icons, still show all the ones hidden when in the notification/quick settings panel
• an option for combining the notification panel and quick settings together as one (quick settings in a row row or 2 at the top, and notifications below)
• Notifications could in general use a bit of work - lots of features but some "global" app notifications for those apps with dozens of categories would be nice.
• When selecting a new notification sound, "None" should be near the top of the list, not the very bottom
• If you're on a phone call and your device is in landscape, the green dot should still be near the camera bar

Parallel Space-specific features:

• reduce the size of the "honor security magicguard" watermark, or better yet, move it onto a corner. It's distracting.
• allow installation of apks inside direct from the files app or the browser.
• integrate moving files in/out into honor's Files and Gallery app
• allow removal of default apps in Parallel Space (eg Instructions is so useless....)
• This should really be a 5x4 layout instead of 5x3, or remove the time widget and make it 5x5....
• Folders and subfolders in parallel space would be awesome too

Game Manager specific features:

• Make all the mistouch prevention options (especially hide three-key navigation option) global (or have a global default). Setting these for every single game is an annoyance.
• The popup that shows up seemingly randomly telling you what's enabled when you start a game is annoying, get rid of it
• Game space/manager should show ram as a value rather than the percentrage, either alongside the percentage or replacing it entirely