The reason you are excited is because he is a relative unknown, at this point.
No, I like what I've read. I've been a pretty vocal critic of the new defensive line because people are counting on unknowns and castoffs to carry the day.
That Crawford seems to be at least holding his own against our starters is evidence of some ability to be disruptive, which is what we need. It doesn't mean he's going to carry it through, but all we've got right now is the evidence at hand.
That evidence shows Crawford being our most effective DL at the moment, with Melton up and down, Mincey only flashing a few times and not much at all has been said about Hayden. Some of the backups have flashed, particularly Coleman and Wilson (along with Bishop), but some of that is coming against backups so it possibly doesn't mean anything.
So obviously we still don't know what we've got, but at least we can read a few tea leaves.