Wallabag integration would be extremely lovely.
As for the timesheet function, it might be interesting to extend that to a project timetracker in the style of Kimai. I have just been getting into Nextcloud Deck which I am somewhat in love with, trying to tame it to do what I wish. It would be great to log into the Nextcloud instance, enter the project overview, start the time tracker, switch to Decks to see what is necessary, switch to an editor to start working on things, and end the tracker when I am done. That would be a powertool for bureaucratic road warriors like myself.