Good thread and thanks to kelpieflyer for raising this issue. Thanks in advance for additional input on a few questions, relating to varying track voltage for older locos.
Just to summarize the pros / cons of the two leading options, per this and other threads, it appears there are two primary choices on moving to remote operation of conventional (assuming you want to use currently supported equipment and don't want to do lionchief +) :
1) BASE1L/CAB1L (aka Legacy Lite as GRJ calls it). This will run legacy and tmcc with a limited set of features and will also control track voltage for conventional operation of MTH locos. Is that correct?
2) On the MTH side we have DCS explorer which will allow the remote control using the MTH cell phone app for PS-2 and 3 locos, again with limited options. Based on the manual, it appears it will not vary track voltage for conventional operation of older or lionel locos. Is this true?