I absolutely adore the potential of this!
Here are some of my suggestions:
Destiny - He's quite an open-minded individual, despite his seemingly aggressive and disagreeable takes. I believe he went through a period where he got involved with psychedelics, and openly admitted in one of his videos that he's seeking deeper experiences and understanding with psychedelics, not just the high or rush. For instance, he took a huge dose of mushrooms (10.5g+) and recorded the entire trip. He seems like the perfect candidate who got a glimpse of God or the God Mind or Solipsism but has difficulty fully deconstructing or accepting that reality. At one stage of the trip, he reported feeling complete loneliness and uncertainty about whether anything existed outside of his mind. He also mentioned how he used to believe that truth is all that matters—as long as I align with the truth, I am good—but after the trip and his immense loneliness, he’s starting to question such beliefs. Having someone guide him through those trip experiences and help him explore the things that left him questioning seems too exciting to pass up. I believe Leo could serve him well in this regard and might also make other viewers curious. Destiny is also known for giving a platform to people with novel or fringe viewpoints, so I don't see why he wouldn't take him up on his offer!
Dan Koe - As others have mentioned, Dan has stated before that he thinks Actualized.org is one of the best channels on YouTube. He even goes on long runs and walks just to listen to Leo's full episodes. Leo's influence on Dan's videos is also quite apparent, from the minimalist background settings and first-person perspective speaking directly to the camera, to the metaphors and how he perceives reality. I'm pretty sure I've heard him say in several of his videos, "Reality is just states of consciousness, states of experience." I'm sure he would be delighted to speak with Leo, and there are plenty of things he would love to ask and discuss. Leo is likely one of the main influences on Dan's journey to finding God, so that conversation could be very wholesome and full of depth. Plus, it would be great promotion for Leo and his future courses, as Dan is quite influential in the online education and self-development space.
Bernardo Kastrup - I don't think I need to over-explain here, but I'd love to see Bernardo pushed on his idea of why consciousness has to be the fundamental truth, and how deep his understanding truly goes. He seems to have just accepted that, as a scientist or philosopher, one must take something as fundamental truth—in his case, consciousness—and if that thing can model and explain all of reality, then it's good enough for him (according to his PhD). Probing him and discussing this topic would be fascinating. He also has interesting ideas on AI, and since Leo himself became an AI junkie now (in the best possible way), I'd love to see this crossover happen! Also, Bernardo seems to be appearing on all kinds of shows, even on small channels with under 1K-5K views. It really seems like he's in the promotion stage for the Essentia Foundation. Considering Leo has over a million subscribers and a huge following, it would be more beneficial for Bernardo than the smaller consciousness channel interviews he's been doing over the past few years! I see no reason why he'd deny such an opportunity.
Looking forward to it all! Maybe you could introduce all of them to your crocodile collection... Garr.