Https://owllabs.com/products/meeting-owl-3 - something like that might be what you’re looking for but it’s a video conferencing solution. I have never seen a multi cam product that comes w a built in hub/automated switching unit. Especially if you’re trying to use external mics. How’s the system to know which area is currently speaking? Source: 6 months ago

Owl Cam. I have a similar table size with 9 very large chairs on the sides and 2 on the ends. Source: about 1 year ago

Meeting Owl is pretty cool....does 360 video, and mic/audio.... Source: over 1 year ago

What you describe is more likely an internet speed or WiFi issue than an equipment issue. WiFi access point needs to be in the room, and if 50 people have their phones connected to the same WiFi, you’re going to need more bandwidth. From a tech point of view, lots of meetings are buying owls - https://owllabs.com/products/meeting-owl-3. Source: over 1 year ago

Since you said 'inexpensive', I'm guessing an Owl is out of the question? Source: over 1 year ago

I'll update this if I find more. For now, this seems to be a partial solution. It's a Gmail add on (except I don't use Gmail) that adds reminders. The options when setting reminders include cancelling it if someone replies, and to remind everyone in the thread. If you combine those two, it seems like — if you use Gmail's web client and have $23/month you're dying to get rid of — a decent way to add the feature. Source: over 1 year ago