Random shouts is common place in all MMOs, I have had loads of help on STO using zone chat (shout) and people don't care about conversations in zone chat on there, I really don't get why its such a big deal, people making parties shout atleast once a min, and if you see one fly past just wait 1 min, or scroll up the chatlog to see what was said.

If you are having problems seeing ls or pt chat then use a different tab for those, thats what I do and it works perfectly.

This game already has a lack of a social aspect, what you want is for it to get worse by making everyone hide in thier ls to never come out of it.