[adamconroy]

I was about to say the same thing as your parent. I recently had a nice feature toggle experience using a strategy pattern with DI.

Basically there was one 'if' statement in the DI container configuration code that looked up a config. Basically

if (newPricingStrategy) bind IPricingStrategy to NewPricingStrategyImplementation else bind IPricingStrategy to OldPricingStrategyImplementation