Considering SDSU's field is smaller than a regular football field, it shouldn't be that tough to match it. All the cool stuff they have in their facility we already will have in the SHAC, Dome, and indoor track facility. All we need is a building with a full sized field with a 2nd practice locker room (so players don't have to bring their stuff from the dome locker rooms), restrooms, storage, and maybe an on site taping or refueling station. I don't think we even need to move the coaching offices or the meeting rooms since we already have them in the dome and they are really nice to begin with.
Do it in 2 phases. Phase 1 would be the indoor practice field and practice locker rooms. Phase 2 we could do the coaching offices or a player lounge with pool tables and all the cool stuff the big dogs have. In a dream scenario you could add a building specifically to accommodate the campers in the summer or add a skywalk but I think that's kind of pussy.
At the end of the day with the bubble, IPF, ITF, and dome it would be the largest collection of indoor buildings from anywhere near by. I heard ML say that with the bubble it's the largest collection of indoor facilities from Minneapolis to seattle. That's a good way to wow people.