Legacy or TMCC has a single button to reverse. Neutral on those, as it is on DCS, is just throttle back to zero. You can also control the individual volumes on Legacy, but not plain TMCC locomotives.
I'm still not giving up on DCS, I am a bit annoyed that I have to do this little raindance, but it's not the first time.
I still think for great sound, the Legacy locomotives are top of the heap. I like the fact that DCS is a two-way system, there is a lot of potential for expansion for that capability.
Bottom line? I'm not planning on giving up on either system.
FWIW, mine was as easy as yours to install, it wasn't until it started crapping out and caused a crash that I realized something was amiss. For anywhere from 20 minutes to over an hour, it ran great. I think it's as good a Legacy for slow speed performance, one thing that I like about both. TMCC is behind them in that regard, the standard being only 32 speed steps.