Rondo is a building block. Not a franchise player.
I agree, and I think this distinction is important.
It means that Rondo is not untouchable, so every option involving him needs to be explored.
It also means that if our plan is to tank for a year or two, it´s probably smarter to trade him than to keep him, while his value is still high. I fear that once we´re a bad team, and Rondo is our best player and has only the average rookie to work with, his flaws will stand out and get exaggerated even more. So, unless we´re 100% committed to Rondo, and wouldn´t trade him even for the next Magic (and we aren´t, considering the Chris Paul rumors), it might not be a bad idea to trade him to increase our flexibility even more.