I DO think soaking is good and I would also do that if I weren't fermenting. In fact, that's how I started out with wet feed. When I was soaking I'd put the feed in the feed dishes the night before and let them soak overnight. It still has the benefit of helping break down some of the anti-nutrients in the seed coat and, IMO, a good practice!!!
I was also able to soak in whey (from cheese or yogurt-making w/raw milk) when it was available and that also has a lot of the benefits of regular fermentation...where I wouldn't put whey in large amounts in a long-fermenting feed batch.