[dvboy]

The 11pm curfew is set by Merton council and considers the time it takes for spectators to leave the site and get to what public transport options are left at that time of day. A later finish would require a consultation and I expect the AELTC have no appetite to change it. Whether they start earlier or finish later, that's a longer shift for everyone working on the two main courts. It's good to know you're definitely finishing at a specific time at the latest, unlike at other tournaments.

As for the scheduling of Today at Wimbledon, I agree with Brekkie's suggestion of BBC3/4 at 10pm. If they are still playing at 10pm at most you're only delaying the news by an hour. I'm surprised they don't use BBC Three/Four more later in the day but they would probably be accused of not giving it the prominence it deserves.
In 2019 the women's doubles final was quickly shifted over to BBC Four (to make way for a new episode of Top Gear of all things) and not done very cleanly: www.youtube.com 

Worth noting from Tuesday they are staying on BBC Two, and only moving to BBC One on Friday because of the first night of The Proms.

Lastly, they should start BBC Two coverage at 10:30 on days where plays starts at 11:00, so they can get the review/preview chat done without missing any play, and they should move the lunctime news to 12:30, so that BBC One coverage starts at 13:15 at the latest, giving 15 mins before Centre Court play starts.