over 7 or 8 seasons off training, getting 2 pops on a high end SG in total, which I do expect to be quite normal with cross training, have a look what the difference is for salary with either level 7 or 9 rebounding for a shooting guard. you can use a salary calculator to do so.
from your response you dont seem to know 2 more rebounding on a high end SG makes quite a bit salary difference, I strongly suggest to play around with the calculator. do you want a link as well?
If cross training were not there, that 2 extra pops would have gone to JS or JR or some similar skills, which would give that shooting guard very much higher salary than if that 2 extra pops were given to rebounding.
I think the best thing we could do this wait for this season to finish and see the impact of cross training on salary. :)