Sorry to be late about this, I saw socklisten -n was added, I had tested it but without really seeing any difference. I just noticed while trying to document it on wikichip that I made a mistake, sort of.
The sockets where it would be useful to disable the nagle algorithm are the socket created by /sockaccept, not the socket created by /socklisten, where no data are sent/received.
I'm not expert on the nagle algorithm bit at all, I have no idea if it's worth keeping a support for it in /socklisten, but at least /sockaccept would need to support it.