Hi Liz!
That makes a ton of sense. Off the top of my head, I can’t think of any major “gotchyas” or things to be aware of when building out Service Hub to avoid impacting Marketing and Sales. Help desk works on it’s own object (tickets) so you can easily create processes around it that are different than what you’ve built for sales via the deals object. If your sales team is already using help desk as a tool for responding to general inquiries and leads, they can continue doing so while your support team works out of help desk to manage tickets.
Very curious to hear from others’ experiences though!