Yes indeed that's where I got the idea. Only whereas the warlock shoots eldritch blasts at specific opponents, one-on-one, the bombardier fires them indiscriminately at all and sundry. To the victim, the result is the same: untyped hit point damage. I did allow the bombardier's targets a Fortitude save, though, since (unlike the warlock, who I believe has to make a ranged touch attack) she's going to be automatically hitting them.