Jones' lawyers will, and should, fight any suspension as a restraint of trade violation.
Goodell shouldn't do anything unless, and until, Jones is actually convicted of something. Not just arrested, but convicted. And yes, a plea-bargain would be considered a conviction.
Remember: innocent until proved (or plead) guilty.
If the former commisioner had the courage, the spine, the moral rectitude to do the right thing in the winter/spring of 2000, when that hideous scumbag Ray Lewis agreed to a one-year suspended sentence from the DA for obstruction, then the current commisioner would have at least some precedent on his side. Instead, Lewis got away with murder (figuratively, allegedly). And the Ravens win the SB; further proof that there is no god.