Based on what we’ve seen in Alpha (and sharing my own anecdotal experience of playing him), he should have solid peel potential. With the reduction in damage, and increase in survivability, he’s able to focus more on displacement and making space for his team, including peeling for the backline when needed.
When you consider the increased CC on abilities like Seismic Slam, improved stun duration on a charged Rocket Punch (from the Power Block ability), and the rather large area slow on Meteor Strike, Doom’s potential to peel for his team is there.
Orisa is definitely a more aggressive tank with her rework, however abilities like Energy Javelin and Javelin Spin are great space making abilities, and can be used effectively both offensively and defensively.
Of course, all of this is based on Alpha and OWL feedback. We will continue to monitor and adjust as needed throughout the beta