As a Roblox developer, it is currently impossible to make a reliable bot in order to handle and manage big groups.
Previously, we could easily make a bot and handle all our demands through an open source Roblox API made by the community, however because of the recently released, FUN Captcha, it made the login process impossible. There are still some workarounds however they are highly unreliable and need constant maintance.
Roblox has great potential in creating healthy communities, however it is heavily ruined by how limited the provided tools are.
If Roblox addresses this issue, we would have plenty of ways we could interact with our community, from automatic promotions(for mostly but not limited to community games) to giving roles after certain criteria is met(for example getting a high score).
There are so many things we could create, but the tools are just not there.