Never had a problem with DCT TO causing ABM WPTs in regards to ATC.
Also operate the -400 and -8. After the aircraft settles on the new DCT TRK I eliminate all unnecessary abeam waypoints. I do this as most have now become just clutter with no useful purpose. If any has a wind entered I leave that in otherwise the FMC drops the wind data and as the FMC degrades the wind data over sector time unless updated it can lead to quite erroneous ETAs, fuel data etc. You still have the option/ability to enter your own wind data into any waypoint, including abeams, should you wish to do so to ensure accuracy of the FMC derived data. Really only an issue for long sector lengths between waypoints or possible transitioning through a significant wind shift.
Regularly did this particulary when the FO and/or SO said they had been told to not eliminate superfluous waypoints by their trainers. Showed them how and why to do it and the greater accuracy subsequently obtained and generally the response was somewhat along the lines of '...you can do that? no one showed us!'