I like that it is easy for my team members to use as well because they already have existing knowledge with their current CRM systems so we can help them transition over easily without having any problems! The reporting capabilities are great too since there's nothing really out in market yet where i know of (yet).
Nothing at this point but more features would be nice when using Subtley within our Salesforce orgs. We're solving issues around managing sales teams across multiple offices/sites which used other products before us had difficulty doing or lacked functionality completely.