Perahps also include events a user has subscribed to along with these personal entries?

That's a good idea. However the chance of new feature ideas getting into v11 (unless sponsored, which one big thing has been recently) is about nil, just because there is so much design and architectural stuff being worked on for that release. It could be a future version though.

For reference, there is a link to view a member's calendar shown under the links on their profile.