One thing I might add - this is for all LM's...
On my hunter I have a "find the path" weapon that gives me another 6% to run speed, I equip it, pop the skill and switch back to my main LI... voila, 21% run speed.
On my Cappy I have a buff stick, all the major buffs are max'd out, equip it, buff the group and switch back to my main Halberd.
On the LM, I carry a "share the power" stick, an extra 10% to share is really nice, I have both of my staves quick-slotted, I switch, share, switch back.
Also, depending where you have rep get the best damage/crit/resistance scrolls for your LI's that you can. I happen to like the new ones in Wildermore.
As for legacies on your staff, for sure...
Tactical Skills Direct
Fire Skills Crit
SS CD (I wish there was a Staff Sweep CD legacy, but that's a different thread for another day)
After that people will start to differ. I like cracked earth range, damaging skills debuffing, but I PvP a lot.
[center]Irin r8 Hunter // Arngar r8 Burg // [b][color=red]Akthuri r15 LM[/color][/b] // Vishus r5 Captain[/center]