Banestrike is actually good in this era. I did the full Death Incarnate cheevo (or whatever it's called) on Phinny to get Banestrike down to its lowest possible cooldown time. However by then it's like 0.2% of your DPS. Or maybe 0.02%, can't remember. It's kinda funny that the cooldown-reduction aspects of Banestrike are locked behind cheevos that aren't even completable until level 95 / VOA because they require Alaran mobs, and by then it doesn't matter much as an ability.
Unrelated thought, always thought it was weird how Kunark not only had roaming beefed-up versions of Naggy and Vox who dropped their loot, but also....Severilous. Like why didn't he have a classic version? Back in 2000 or so, and this is probably OCD, I always thought they were gonna add a third classic dragon that looked like Sev and just hadn't gotten around to it or something. My theory was that it'd be in some even-lower Guk zone, Lowest Guk or whatever. Course none of the Severilous Jr stuff happened, but eventually "Deepest Guk" was a thing.
It still kinda bothers me that Severilous exists in this weird bubble where he doesn't represent any classic dragon.