I'm super interested in emersed growth setups and was really sad I couldn't make it to the paludarium talk after it got moved. I'm interested in transitional growth out of the water, fully emergent plants and how their needs differ, whether it's possible to keep mold and fungus down effectively without springtails and isopods, what kinds of plants might thrive under those circumstances, how to grow emergent or partially emergent plants in, say, a jar, whether it's best to maintain 100% or near 100% humidity and how to do that aesthetically, whether and how to change ferts, and suggestions for low-tech submersed plants that are also very pretty emersed and high-tech plants that are otherwise unavailable to those who don't run co2. I'm curious about whether a deep water culture, constant flow, or ebb and flow systems are more effective for the kinds of plants aquarists would be most interested in growing and how to duplicate some of those systems in a way that is scaped rather than designed for efficiency. I'd like to hear about common pitfalls and failed experiments. A lot of people had trouble with their wabi-kusas, so maybe examining what went wrong there would be helpful.
I don't know if you can extract anything interesting from that stream of consciousness. Excited to hear whatever you decide to talk about.