This is not a good WvW elementalist build sorry. It may serve as a good PVP build but in WvW (on a decent server), the combat is around squad and large-groups. The small-combat fights are not as helpful to overall WvW as a good staff build which gives you AoE control of walls during sieges, mass heals and group buffs.
There’s macro management and micro management. if 1 person is holding back 2-3, it’s more time for that 1 person’s team to finish the job they’re doing. Then, those 2-3 if killed (which they were, in the vid) will take time to get back to their team, not really being to help the big fight in the meantime.
It’s a bit like in WAR: “war is everywhere” and everything helps. It might not help as much to gather 1 node in WvW, but it definitely helps more to hold back people who might do more damage if they were somewhere else.
Based on this, I wouldn’t agree with the naming of the SOLO BUILD; it’s a build, which works in the right hands, there’s no SOLO in WvW, unless you run around discovering vistas, POIs and things like this. Otherwise, YOU’RE HELPING (unless, of course, you’re slacking somewhere).
The vid is more than self explanatory. Cheers to the maker.