sPVP mesmer help
You’ve got lots of options here… and bear in mind thst your build needs for PvP and WvW will be different sometimes.
Condi: great for PvP and WvW roaming. Your builds can be much the same. I like to use staff and scepter/torch. Many good builds for this can be found in the builds link above here, especially from Oscicat. I think napalm cat was a favorite, and maybe another called blackwater? Recent changes with scepter have brought these back into fashion and discussions on the forum here have build links. Explore the topics from the past week.
Interrupts: great in both PvP and WvW but now even more viable in larger group/Zerg busting because mantra of distraction is now an Aoe skill. I found a build called shatter lock that was posted in one of the topics just a couple days ago and I had a fun time using it for a bit. Lockdown builds will take your opponents by surprise because it is one of the lesser traited builds mesmers use. GS and sword/pistol seem to be favored in this but you will find opinion varies a bit on those specifics.
I would link for you but it’s rather hard to do on a mobile device. Again, check the stickied builds topic for all the kitteny build goodness.