Errrm, dunno just how it will help, apart from, as you say, compounding any further driving offences.
Also potential for abuse, say there is a married couple where one partner works in a police station. Couple split, partner who works in PS is a vindictive type and gets the license of other partner revoked.
All hell breaks loose.
Potentially a step in the right direction, but needs to be backed up with a immediate section 54 59 also, otherwise what is to stop the perp walking out of the station and getting straight into their car?
Edit : got the wrong section number.