Given that, and the sophistication of many of the teams, and the way the competitions are designed. The best teams are usually just doing some form of preprogrammed dead reckoning sequence and getting a bit lucky and rigorously placing the bot at the beginning.

AKA, while the NXT/EV3/etc devices are capable of sensor feedback, few teams made use of it. Its likely all the FLL teams need for most of the competition is three motor forward/reverse.

PS: Maybe I sorta failed to respond to the main point, which is that the spike kits aren't there to be "cool" sitting on the shelf and excite kids who get them under the tree. They are mostly purchased by educational/FLL teams where the build instructions and/or goals are provided by a 3rd party.