My Legacy base is currently at ver 1.6, and real reason to update further??

JEFF,

  The 1.72 is mainly for the crane operations along with the new Base 3.  Here is a thread what MARTY E posted if you want a download.

https://ogrforum.com/...sted-here-s-the-link

The Cab2 changes made from v1.61 to 1.70 were as follows:
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•    Added Legacy ENG Type AUX TENDER
•    Added the Legacy version touchpad for the Crane and Boom car
•    Bug fixes related to ENG Type TMCC Acela
•    Fixed bug where red light frequently came on when transmitting to base
•    Corrected bugs related to the Train Builder

Added compatibility for the CAB2 with BASE3- the update came out before the BAS3 announcement and then later was said the update was specifically to make it compatible with BASE3.

The Cab2 changes made from v1.70 to 1.72 were as follows:
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•    Fix issue with Legacy crane type (1.70 created this bug compared to 1.61)
•    Added new sound type for future Legacy cranes
•    Additional optimizations for Base3 compatibility

Also, the base remains at 1.60 through these releases. They were for the CAB2 remote- again bug fixes, feature additions, and compatibility add for the future base3.