I tried a couple games as the QoT and focused my build heavily on minions/shamblers.  Shamblers, Compost, Entourage maxed out, items were geared towards +minion stats, etc.  The build was quite weak, the shamblers just seemed to lack any punch to them.  The skills spent on Shamblers, Compost, Entourage were much better spent on the QoT's attack line.

The Shamblers, even with maxed entourage, also seemed overshadowed by the 'base' minions like siege cannoneers and minos.

Has anyone used a Shambler build effectively?  The latest games with QoT I've ignored the Shambler line completely and relied on base minions alone with her attack spells and I do much, much better.