As far as the /sea ____ function goes I can't see many more ways to refine it besides allowing for more search paramaters. It was used far beyond party invites.

"I wonder how many people are camping LL today"

/sea all Gustaburg

20 people over lvl 30 eh? must mean I'm going to run into some competition today.

"Oh cool a party invite, lets see how crowded the area they want me to go is"
"I wonder where ___ is?"
"I wonder if Campaign will be busy"
"I wonder Who is camping ___"
"I wonder how many people are in ___"
"What the! Why is there a lvl 1 monk with no subjob in Khazaam!"

It really was a great system that spanned far beyond it's original use.