Thanks everyone for your input on this! We're now working on a small but exciting update to conversations, specifically conversation "subscriptions".
Rather than us automating who gets notified of replies, you will be able to control which conversations you want to be kept updated on via a simple "Subscribe" toggle. Subscribing to a conversation will notify you of all replies regardless of being mentioned, and and you will also be notified when it's resolved.
The creator, or original poster, of a conversation will be subscribed by default. Existing notifications won't be affected i.e. you will still receive a notification if you aren't subscribed but are mentioned.
We hope you find this update useful! As always, keep your suggestions coming, and contact us if you have any questions via the usual channels.