Yes, please change the structure of the URL so it does not include the organizer’s name. It only makes sense for a personal calendar invite, not for a group nor round robin calendar link.
We don’t want to use bit.ly because when a URL is used in an email that isn’t from the domain name of the email address, the domain can be blocklisted and the email marked as spam. Especially when sending a lot of emails for a marketing campaign. Talking about marketing campaigns, please implement throttling - where emails for a campaign aren’t sent to all receipents at the same time. Send 10 emails and 1 minute later, send another 10 until all the emails are sent. This will avoid emails being marked as spam. We use Woodpecker for email campaigns, instead of HubSpot, for this feature.