Clients will come in with a sense of what they want to accomplish but may have no idea how to do it. Or they have a pre-conceived approach to an issue that may not be accurate. A good lawyer will listen to the goals, get a good understanding of the key elements involved, and have a good (almost intuitive) sense of what it takes to navigate the legal and practical challenges to get to the goals efficiently. A poor lawyer will throw around legalese, and may pull even good templates out of a drawer, but will have no eye for either strategy or detail - the result will be a mess.

I would thus imagine that good logical thinking ability and a strong level of attention to detail are the main common factors shared between good developers and good lawyers (at least good business lawyers).

So, yes, I would agree with your conclusion about the correlation in thinking between lawyers and developers. Of course, in both cases, experience helps a lot as well but the key skills must there from the start in order to succeed.

Out of curiosity, do you think there are a lot of parallels between the two fields or just those?

To put the same thing another way, do you think that someone who was a good developer could become a good lawyer and vice versa?

At the advanced level, the most important trait by far is good judgment that assures strategic thinking. If a lawyer lacks this, your deal will be in trouble. I assume your development project would also be in trouble as well without this trait.