Whew, gotta say that the pre-crisis version of Dick happily passing on Robin to Jason is not better than the post-crisis version in any way, shape, or form. In pre-crisis Dick is essentially a cardboard cutout of a character when he hands Jason Robin, but in post-crisis he reacts like a person? He's insecure with his place as Bruce's son, hurt that Bruce gave something of his away without even asking, worried about this kid who isn't ready, and he eventually just has to swallow it all because there's no other choice. Ignoring the fact that the pre-crisis version hasn't been canon in like 40 yrs and features a Jason that does not at all resemble the current JTodd from aesthetics to origin, it literally strips a layer of complexity from Dick's character and from the Jason and Dick relationship as a whole?

I mean, imo, the most interesting(and hardest to resolve)piece of Jason and Dick's relationship is the way post-crisis hand off ties into Jason's post death motivations and Dick's reaction to them. Even with the pre-crisis way Robin was passed down, if Jason had died he probably would still have blamed Dick for not pushing back against Bruce- which to be clear is one of his primary reasons for hating Dick originally, as he despised him since he viewed Dick as Bruce's "yes" man. However, with the post-crisis version, Dick is now forced to contend with the fact that he saw Jason's death coming and didn't push hard enough to stop it. Post-crisis Dick assumes a much more active role in Jason's death, earned or not because he was the voice of reason.

The cherry on top is that using the pre-crisis version of this is that it does the annoying thing of detaching Dick from Robin as if it didn't matter to him like it did to the others. It just kind of sucks ¯\_(ツ)_/¯