I think pickup rollers arcing on switches is also a problem for some that are using non-DCC 3 rail layouts. Not sure that is strictly a DCC problem? Probably a long way into the future, but I want to do the same thing with 3 rail and DCC someday and I also have Atlas track. I've got my eye on an NCE system.
My grandson has HO and he is wanting a command control system so I may get some practice in a little earlier. Bad news there is I will probably be the one that has to buy him the NCE system...