I’d like to see a feedback holding back Searing crystals…. maybe a few would explode on the bubble, but with the sole exception of Lyssa, no mesmer could create a sphere powerful enough to hold back such a destructive form of magic – at least, that is HOW it should be in Guild Wars (2), but given we’re playing this subpar, cliché-ridden sci-fi game called Alliance Wars, it may turn out the mesmer on Scarlet’s payroll is stronger than a goddess in the field of defensive illusions/glamours… actually, that is the only twist that can happen, given how much the writers love to downplay the Six Gods and their actions.
As for the Searing: the personal story confirms two things: 1) the shamans – being primitive fire mages – couldn’t control the energies of the Searing, which is the reason why it was blown out of proportions. 2) The two cool Priory dudes (Baron and Ferro) can create a Searing that only bombards the target area, namely the risen fortress the Cathedral of Verdance was turned into. Orr’s dying ecosystem did not receive another irreparable damage that day – the crystals were smaller as well.
Also, the radius of the Searing did not cover the entirety of Ascalon. It was more of a half circle actually, with most of the crystals falling on Ascalon City, the Wall, and Old Ascalon/Ashford. It went as far as the giant one in Pockmark Flats to the south, but if you paid attention in GW1, you’d have seen that there were far too few in the north, which makes sense, since the charr didn’t nuke their own reinforcements coming in from the Blood Legion Homelands.
The reason why we see Ascalon in such a bad shape in GW1 is multi-faceted: first and foremost we have the Searing itself, then the nuclear winter effect caused by all the dust that was blown in the atmosphere above the country (keep in mind that Ascalon is in a basin walled by mountains on all sides: hard time for all that smoke, dust, and smog to be blown out by the winds), an actual winter following the Searing (it was autumn when it happened), reduced populace to save what’s left of the fields, and the charr shamans and their pets burning down everything in their path. Remember Fireheart Rise? All the tar, sludge, soot, ash, and barren wastelands? The Flame Legion is not eco-friendly in any way.
All in all, in the real Guild Wars universe a mini-Searing should theoretically work against the tower, although I agree that it would make for a bit bland story.
Ceterum censeo: Scarlet must be purged from GW lore.