I am not surprised the league said no to the proposal for Ottawa to give up Boston's #25 pick in the draft. Doing so could set a precedent for future similar situations such that a team could make a trade for a late draft pick from another team to pay it's "fine" rather than have to give up its higher pick.
The distinction would be that we already owned the pick prior to the ruling being made. So while your point is valid, I think that the league could have made an exception on that basis.
I think it is a case where the league wants to come down hard on the violation, like they did with the Coyotes.
If the league subscribed to the idea that the Andlauer owned team should not be responsible for something that happened under what effectively was a different organization, they wouldn't have punished them in the first place.
Unless there is some legal ground that Andlauer has to stand on based on how the situation was represented during the sale, I highly doubt we will see the punishment softened any further. The three year window was likely the league's version of relenting and softening it already.
We have to hope that we make the playoffs and do some damage this year, because ironically if not, we might end up in a very similar situation with a new rebuild to the one we started in, where we were out a very important pick.
If Andlauer wanted to get back at the league, he should sell the team to Neko Sparks.