Just a couple suggestions I thought would help with the revival.
- Advertising in more places such as other forums that allow it.
- More reaction faces instead of like, love, etc.
- Upgrades (Not sure if prices are the same, maybe do a revival deal).
- Logo is a little bit so so at the moment.
- Purge some threads, and clear it up, don't exactly remove them just vault them.
- Allow users to buy old usernames of really inactive members.