Email founders of seed / Series A startups in adjacent spaces. Tell them you really admire what they're doing, and would love to get their take on the thing you

Email founders of seed / Series A startups in adjacent spaces. Tell them you really admire what they're doing, and would love to get their take on the thing you're doing -- could you grab coffee for 30 mins? Don't ask them to be mentors, just get their feedback and let the relationship evolve organically from there.