I think of BB row as I think of deads, bench and militarys - the most basic and essential "skeleton" that can be "fleshed out" with complimentary variations/different movements .
If you feel cable rows really do something for you that BB rows don't (as I feel towards chest supported rows- I feel they are to BB row as incline is to flat in many ways) You could work them in as an A/B alternate or simply split your rowing sets between them as I've done :
Instead of :
BB rows 1x15,2x10,3x5
This:
BB rows 1x15,1x10,2x5
cable rows 1x15, 1x10,2x5
(last week of 5's drop volume to 1x5 each row if necessary)
I've done this with the following pairings ( but using a 10,8,5,3 rep template)
3xweek-(m,w,f)
flat/ incline bench
BB/chest supported rows
militarypress/upright rows
(deads on monday, OH squats w&f )
I really like how its working for me , the vast majority of my training is Flat bench, press, rows and deads so it's refreshing to have a little variance from my usual and I've taken care to avoid any junk volume all exersizes I added in are such major compounds that I could actually do a cycle with just the "fleshed out" exersizes and still add appreciable mass.
(example - these alone would be a very good cycle)
incline
chest supported row
upright row
OH squat
One thing I haven't done is alternating w/o to w/o as my hypertrophy/strength ratio goals are slightly different than most I think, and I'm a firm believer in "greasing the groove".
Just another way to skin the cat really.Good luck...