...so far has netted me Dragon Warrior, Dragon Archer and a 5* Flame Rogue. Had one pull that was straight garbage, though.

But! Seems like working as intended. Also, don't think it was connected, but pulled Orc Warlord out of one of 5-6 4* summon stones.

Initial runs with dragon warrior are actually very promising. Was running 4* R5 crown warrior before but almost never using him. Dragon Warrior, even though he's in mid-levels, stays longer and his knockback entrance is simply amazing. The knockdown is instant and generally right on target... except there seems to be a bug where it doesn't function if you're about 2/3rds of the way through a story screen. That said, he's still extremely useful for certain story levels - his entrance crash can intercept crown rogues at full speed and I suspect when he's levelled he might outright kill them.