I don't need no stinkin' sparge arm....
LOL, I'm sure you don't Denny, but for us mere mortals..........
JK, you are certainly right, it's not a need, it's a want. And I probably shouldn't say this to you, but, we may well be going back to fly sparging. It's tough to brew 1bbl big beers with a 30 gallon mash tun. Possible, sure. But fly sparging will make it easier. (I'm just being pragmatic, LOL)