As much as we love the terrifying Engrish of the announcer voices in BB, I think there is a market out there for a nice hype western announcer.
I heard the DLC announcer voices for BBCS:EX are already on disc, so maybe there's no possibility of adding more DLC voices. But I hope Aksys will work with ASW to make it possible in the future.
The current DLC voices (especially their A versions) often sound really bored or have very strange inflections (and let's not mention their pronounciation.)
Since Aksys have gone to the effort of getting english voice recorded for the characters, you might as well have some for the announcer as well.
I would definitely appreciate a more announcery announcer. I think of commentators on streams, or sports shows, and I'd like to have that kind of mood from an announcer. Just make sure it passes the bleeding-ears test. If over 50% of a focus group reports that the game makes their ears bleed, then it might not be ready for release :)