Rondo plays lazy defense. This wouldn't go well with Joerger. The spacing issue wouldn't be that bad with DMC emerging as a good 3point shooter and the option to play Tolliver or in your case Mirotic at the 4.
But would Rondo be able to beat Lawson for the starting spot?
What's sad is that upgrading our PG spot for next season looks like a really tough task. We could try to sign one of Teague, Hill or Holiday, but their teams have the bird rights and the Kings aren't really a better FA landing spot right now than the Pacers, Utah or Pelicans. After those guys there isn't much left in the FA market, assuming we don't want to pay Rose or go with an aging Williams.
A trade might be a solution, but we don't have valuable trade assets, so we are limited to younger PG's not getting enough minutes or older guys fallen out of the rotation. Tyus Jones in Minny may be one of those younger guys, who might be able to step up when given more minutes. I don't think Tj McConnell would be available, but when the 76ers draft a PG next offseason or view Simmons as a guy similar to Giannis he might be the odd man out. Rozier might very well be available, if the Celtics decide to draft just another PG. We could throw a bunch of young assets at PHX for Bledsoe or try to ressurect Knights career.
So all in all trade scenarios don't look very promising.
And in the end there is the draft. I don't know anything about the upcoming draft class. All I know is, that we are bound in a possible pick swap with the 76ers and lose our pick, when we fall out of the Top10. So the best case scenario looks like a late Top10 pick and with DMC, Vlade, Vivek and Joerger all seeming to be adamant of trying to reach the Playoffs the odds of losing the pick completely are there.
Well with all that in mind, having Rondo for just another season and trying to give him the same kind of treatment Joerger has given Ty Lawson doesn't look that bad all of the sudden.....
I personally would prefer a diamond in the rough from somewhere, that is able to shoot, play D and moves the ball well, but honestly I don't think Vlade is able to come up with a solution outside the known paths.