Honestly not sure how much coaching reputation plays into recruiting any longer under the 3.0 system since we're now in a see-it, recruit-it realm and you can literally see anybody your budget allows you to. There are no "shadow players" that you can't see.
But, if it works as previous, you will drop 2 steps (from A+ to A-, for instance) and the recovery time will be 2 seasons (you basically heal one step per season).
The biggest impact would be in the hiring process if you're looking to switch to D1 in the next season or so, but even then, at A-, I'm not sure you'd disqualify yourself from any positions. Personally, it'd be a no-brainer cut-and-upgrade and I wouldn't lose sleep over it for a second.