When clicking (or holding?) in drawing mode, show a "spot indicator"
Tuple has a mode where instead of drawing, you can click to show a kind of (as I remember it) radar indicator of where you clicked. It's a nice way of pointing stuff out as a guest without the effort (I'm lazy) of drawing a line or circle. Instead of adding another mode, maybe just clicking in drawing mode, without dragging the mouse, could show some sort of stronger indicator around the spot you clicked. Or if you think it would be confusing not to be able to draw a small dot, maybe holding down for some number of milliseconds without moving the cursor could achieve the same.
Remember "view" setting
When I join a meeting, I always want the "Compact" view when I'm hosting. And always the "Large" view when a guest.
Remember "enlarge my video" setting
Every time I join a meeting, I hover my video and click the "[ ]" kind of icon to show my video in the same size as the other user's, because otherwise I won't see it in compact view. Would be nice if this choice could be remembered (or a default could be chosen in settings).
Confetti (or other celebration)
Tuple lets the guest trigger confetti on the host's screen. Some similar whimsical celebration would be fun :)
Select a single window to screenshare
With large monitors, it's sometimes nice to be able to share just a single window, to better control how legible the screenshare is on the remote end. It's also nice to not worry about local alerts or browser tabs or other "not really public" information on your screen, when sharing.
Dock app window to menu bar [macOS]
I wish the Pop app window docked to the macOS menu bar icon like Screenhero used to and Drovio/Tuple both do, instead of being a standalone application.
Password or invite only meetings
As a user I want to be able to limit the people that are allowed to join my meeting. Anyone who has the link can join the meeting now.
Choose specific users to allow control
Currently, screen share hosts can toggle allowing everyone or no one the ability to control their screen. This feature request is to enable hosts to select a specific subset of participants that can share their screen.