Tempted to use snotlings ? Honestly, don't bother. As a core unit they're a total waste of time and points. Pump Wagons are a bit better but snotto core are rubbish and expensive for what you get.
The only reason to include snotlings is for a jolly good laugh or to show off your painting detail skills. Or, possibly as something to eat for your Orc's victory barbeque (if Bretonnian horse meat is not available)