You can create a meeting in Google Calendar with the RC app but being able to use the RC app as the primary tool for collaboration would be great and viewing Google Calendar would be essential for this.
Ability to send a text and/or message company-wide without having to create a group
A group seems fine except every time someone new is hired this group would need to be maintained. It would be nice for company-wide alerts and announcements to have this simply be every user setup in the company account.
It's easier to glance at a phone number before dialing with the dashes in place, that way typos are easier to spot. Thankfully the dashes are added after the call is started but at that point it's often too late.