I think it would be nice to use a range of YouTubers. I know a good few Trading212 users who are YouTubers, myself included. I would happily make a few videos for the channel and put lots of effort into it but every YouTubers has their own limitations. For example I know very little about the CFD side, and would not be comfortable talking about it. I guess the best way would be to approach individual YouTubers. You get a good video and they get some endorsement for their own channel. Just an idea!