Since we can equip more than one linkshell at a time.
But the main one been the only one we can chat in despite been able to see other chats from the other ls.

I'd think it would be a great idea if you could also chat in them ls as well with out having to set it as the main one.

I.e

Main linkshell

/l Hello World

Other linkshells

/l1 hello world
/l2 hello world
/l3 hello world

Each person in the different linkshell will be able to communicates which each other rather than just reading the other linkshell.