For now, its clear there will be no more modes for sPvP.
But in far, far, far, far… future
GW2 “trying” be e-sport, so modes shouldbe same.
CTF will fail here (heartseeaker spam for fast rush)
TDM is OK
King of Hill is OK
And, IMHO game mode same as DotA is OK too!
Map for 5vs5 with 2/3 lines, and some towers/gate/gate+towers to destory. At end destory “base”. For “minions”, some elite mobs… it willbe just great!
DotA at TPP MMO