I really enjoy the ease of use, both for myself and for newbies. I appreciate the detailed instructions for how to connect and how to invite others on screen - I send those all the time to new students and guests. It takes just a few min to set up a livestream, and it's a very easy to understand environment. The customer service for Crowdcast is very responsive and helpful. Anytime I've had a question or needed clarification, the team responded right away (I integrate my Crowdcast with Patreon, so from time to time, there are questions that come up with that because Patreon itself is unfortunately NOT as quick to respond as Crowdcast). I've recommended Crowdcast to several friends and organizations :) It is a little bit on the expensive side for a small business, but when I compare it to other available services for livestreaming or conferencing, no one else has this type of value.
The only thing that is a little awkward is the switching from camera to screenshare, such as when I want to show a Powerpoint. It's not completely seamless - your audience will see you do the action, and there is some delay. But if you're a calm and just very casual presenter, you can cover this lag time smoothly without it seeming weird to the participants.
The only other suggestion I would have for Crowdcast is to create a means to organize and present collections of your livestreams. Your events appear in your archive as just a chronological list, instead of being able to be organized by topic or group. As a Patreon user, I can get around this because on the Patreon side, I can do that organizing. But if Crowdcast were my primary landing point for someone, it would look messy.