Ability to Connect a SharePoint List to a Specific PowerApps App
Currently, you can create a PowerApps app from a SharePoint list and you can add that app to the list's views.
However, it would be great if you could connect your list to any PowerApps app you have created that is related to that list.
For example, the user would open the SharePoint List and would see a PowerApps button (much as is now). Clicking on the button would display the options to create a NEW app OR to connect the list to an EXISTING app. If the second of these two options was selected, it would display apps that are connected to that list, using it as a data source. The app selected would then show as an option under the List Views menu.
This user posted something very similar: