After I get this update out, there will be additional pbp when using the "Debug PBP" on the test game page which will allow you to see more of the inner working of a kick return.
Other than the kicker/punter and the return man, there's really nothing you can do currently to improve your kicking game other than practice special teams. This works pretty much like it does in 2.0 only the engine now looks at some ratings for some of your team rather than just the special teams IQ. What it currently does is pull the top so many players from certain positions for certain ratings and special teams IQ to get a team rating for different parts of the return. It does break the return down into more than just the one rating vs one rating method it uses now in 2.0, but I'd have to pull together the info to tell you exactly what it is doing. I would like to spend some extra time on special team plays once I get the passing and rushing a little more solid.