I flashed it this morning with the Blitzkrieg kernel and had the same issue; the phone would lag horribly when using the dialer while I had my Bluetooth on and enabled. As soon as I turned Bluetooth off, the dialer worked fine. Wifi likewise wouldn't work with Blitz; it just said "error" beside the toggle in Settings.
I did a data wipe, wiped dalvik and battle stats, then reflashed with Popcorn kernel to see if the kernel wasn't agreeing with the ROM. With Popcorn, the Bluetooth would connect, but was static-y and useless (assuming this had to do with it being V5 based, but I'm unsure about that). Wifi worked flawlessly with Popcorn.
I never tested MMS because the Bluetooth issue is a deal breaker for me; I suffered through BO 2.0 with no Bluetooth because I hate the stock ROM. Now that I have BT working, I'm not going back, lol.
Here's hoping Nitro can work these issues out, as I love the layout, look and feel of Eclipse. I know it will be smoking hot when he finishes it
Back on Brokenout 3.0 until B