I am also persona 2. I was (am?) a complete lightning noob, so having a super quick and easy onboarding experience on SN with custodial was fantastic. It got me into the ecosystem, allowed me to participate with a low barrier for entry. Then I can learn about the tradeoffs and options for (non-)custodial LN wallets.
Generally I keep enough sats in my SN custodial wallet to continue posting/commenting, tipping 21 sats per tip, and move the rest off to Phoenix.
On principle, I prefer non-custodial. Maybe more so for my BTC (in cold storage), but it also applies to my sats in my LN wallet because I extend the same mindset across.
I'm not sure I understand enough of how the implementation would/could work to describe how the ideal wallet would work.