I'm torn. I somewhat agree with Aero's comments regarding the long-term costs of the coils. Yes, they're given to the U free, and yes, as station19 points out the maintenance on them may not be as expensive (though I had to de-winterize the foreclosed house I bought for inspection and it was $100.. I imagine doing that 2x per year for a football field sized system would be a tad more). But even still, is there a monetary and/or recruiting benefit to that vs. a blanket? Getting something for free that has long-term costs without any real revenue generation is stupid (ahem, suburbia subdevelopments
www.strongtowns.org). The other stuff - the POS systems, beer taps, heating in the concourses, etc all have direct fan experience positives which can generate ticket sales and possibly prices that cover the additional long-term costs.
The field is definitely stupid outside the issue of if coils should be there or not. We look very second rate with painted field in the meantime, doing so interrupts weekly stuff going on (marching band, team practice/walkthrough, etc) to paint the field each week. Yeah, there are plenty of other shots where the U gets its marketing in (the M on the back of the scoreboard, etc), but having that presence should have been part of the deal if they're not installing coils (negating the need to rip up an entire field of play).
I'm not super up in arms, but a little disappointed.