"Being 'mobile friendly' is something we could"
when I was apart of a ton of forums back in the day I would always interface with them on my phone using Tapatalk it was the best app for a long time but I think it has been pulled from the app store. Might be worth looking specifically into "alternatives to Tapatalk" to see if something new has surfaced taking the place.
"What is discord servers, Scott?"
I think the best comparison to use to describe Discord is for anyone who has used Slack for business/corporate. If no one knows what Slack is... the next best thing would be Teams whether that's Microsoft Teams or WebEx Teams. If I am speaking a foreign language still at this point... Discord is a free service that's easily accessible on Windows, macOS, android phones, iPhones and web browsers. It was started mostly for gaming communities to communicate with each other for both instant messaging and actually VoIP (voice). It has grown tremendously over the past 5 years and now all kinds of communities not just gaming ones start a discord server for common interests or groups of friends or various communities. I have run some small discord servers with just a handful of people involved, I have a private one that has built in automation with my home media server for notifications, I have been apart of some community ones that have thousands sometimes tens of thousands of members moderated by entire teams.
I use it on a daily basis to keep in touch with some groups of my friends, one way to think of it too is an organized "Group Message" that you can have layers of channels and security to allow for instant communication. For work we use WebEx Teams (Slack is better) to collaborate with my company and even other companies with various teams sometimes per project.