Specific to punt-return strategy (not punting or decision to punt) ...
Does it seem like punt-return approach is standardized for simplicity, regardless of field position, score, time-remaining, opponent tendencies or other factors?
I'm broad-brushing here, but it might give context to a few puzzlements.
Brought up by OP and others in in this thread (and elsewhere): What is the risk of going for punt-block when Iowa was kicking from end zone/near goal line? Given Iowa's general risk-reduction philosophy, how likely is it UI will fake punt in the first half, down by 3, inside its own 10? And if they do go off-chart, and it succeeds, well, more power to you for that wrinkle.
Inside 10-yard line, outside of roughing-the-kicker/running-into-kicker penalty, what's to lose by bringing the house for a punt-block? Automatic first down is downside. Upside could get a deflected kick, safety or TD.
It might explain why our returners fair catch almost everywhere -- opponent's 45 or needlessly fielding it inside our 10.