#1: I like the use of the full "Systems Design Laboratory" in the logo and the style of the SDL. The "systems vee", looks too much like a letter and not enough like the design process used in systems engineering. I think it might be difficult to incorporate the "vee" without it seeming like a letter, but I'm sure someone will figure it out! Perhaps incorporating arrows in the logo will help, as in down arrows on the left, up on the right. Also, another component of systems engienering is the idea of going from larger chunks to smaller chucks as one goes down the vee, and the reverse going back up it.