It would be nice to see more video conferencing solutions integrated. We use whereby.com for example. In our case we'd just need a link to be added to the location of an event.
Request for the ability to restrict a user's ability to reply to conversations they are assigned to. This could be implemented as part of Teammate Permissions.
Ability to toggle month view as the default for the calendar
Setting Front Calendar to the default view should make it stick so that every time user opens the calendar it will show the month view instead of weekly