So Unity rolled out its first set of 2D tools in November and holy crap.
They basically blew the external 2D libraries out of the water. I was using Orthello previously and doing 2D was clearly not what unity was designed for, so there was a constant conflict and annoyance with having to deal with 3d space issues. The tools displayed are freaking amazing, and this is just the beginning. Previously if I had to do a 2D project my instinct was to fall back to SDL due to the massive codebase I had built up, but Unity just hands me it and more for free, with better made tools to boot.
The animation tools are definitely nice, and I haven’t even gotten to the really cool stuff they can do.