We were spoiled this past year.
VSTi timing was given to us for free mid-year, though basic implementation.
Jamstix etc

This new release added time signature support and other additional improvements for this 'free upgrade'. This is one of the 'under the radar' improvements I noticed.


2017:
"VST sync has been enhanced. In late 2016, we added much requested support for VSTs that require tempo information to sync to. This has been enhanced with support for time signature and tempo changes. Many VSTs like Addictive Drums, or Rapid Composer need this tempo information to sync .. "


FTR, you don't buy RB, you buy RB AND BiaB. I don't think many upgraded the whole package just for RB features.
RTs are usually considered BiaB features, though they also apply to RB too, so that is often worth the upgrade alone. Remember; many of the BiaB features (not specific to RB) still apply to RB with the upgrade.

I do not work here, but the benefits are still awesome
Make your sound your own!