[vvanders]

Dealing with interchange formats(which Maya and 3DSM excel at, no idea on C4D). It's very common to find that something you've build in your authoring package doesn't import cleanly and figuring out why can take time. If you bring animation in at all you'll have to deal with skeletal rigging, and then the tooling you want to build around interaction on the unity side of things.

There's a reason that games budgets end up running very high unless you're dealing with 2D/simplified content.