These are just some random ones that I randomly thought of:

1.) Multi-Window Support: Open multiple communities simultaneously.

2.) Color-Coded Comments: Enable color-coded comments for easier thread scanning

3.) Per Account Settings: Customize settings individually for each account

4.) Experimental Options: Allow users to beta test new features

5.) Premium Option: Potentially add a subscription option for users who wish to subscribe.

6.) Swipe-back Functionality: Add the ability to move between sections without using the back button

7.) Long-Press Previews: Quickly preview images, GIFs, and albums without opening them fully.

8.) Potential Premium Features:

Cloud backup, ad-free browsing, user tagging, text translation, text selection from images, etc.