A320 First Officer reported a flight control issue during cruise followed by two unrelated equipment issues. Flight crew returned to departure airport and aircraft was sent to maintenance.

Narrative

We experienced several MX (Maintenance) issues during climb out and then ultimately at cruise enroute from ZZZ to ZZZ1. First issue was a flight control issue we noticed during our multiple level offs during our climb up to cruise. We noted that the plane was flying with a roughly 3 degree turn of roll to the right while in level flight. We tried to rectify the issue by cycling the autopilot and hand flying but the issue remained. The CA (Captain) started a discussion with Maintenance Control and Dispatch to write up the issue. While we worked problem 1 problem 2 emerged. The number 2 brake temp sensor started to behave erratically and was giving us an intermittent hot brakes ECAM and was showing brake temps up to 900C; before the sensor displayed XX and stopped providing input. We discussed our options and contacted Dispatch and Maintenance Control. After working on problem 2 we got another ECAM for Door R Aft EMER Exit. This ECAM has the crew monitor cabin pressure and if necessary perform an emergency descent down to 10;000 ft. After discussing this third problem with Maintenance Control and Dispatch the CA decided to change our destination to ZZZ2 in order to have MX look at the plane. I contacted ATC and notified them of our intentions to change our destination; and that we were not [requesting priority handling]. We chose a lower altitude and then had an uneventful return to ZZZ after Dispatch asked us to fly there instead of ZZZ2. We landed at ZZZ and handed the plane back off to MX.