Syracuse should pay the assistants because the program needs continuity as much as anything else this offseason. Shafer is creating a nice atmosphere but we need injury-and-departure-free continuity to capitalize on it.
That said, staff salaries, like much else in college football, is part of arm's race a private school like Syracuse can't win. Bama pays their defensive coordinator north of $1m per year. That sounds crazy at first but it might be fair market value when you consider the salary as a percentage of revenue created by their program. I'm pretty sure average assistant salaries are around $200k in the BCS. The goal for Syracuse should be to beat the average pay -- and offer a premium to its best recruiters -- but not overcommit or get into bidding wars for coaching talent against SEC money.