If you want to further your education, I would not recommend the PADI DM course. Now, if you want to help people or perform guided tours, then the DM path is the right one. It's a very rewarding thing to do, but you have to want to help people.
The skills I learned were to have "demonstration quality" skills and to identify potential issues in other divers. The latter skill is quite useful actually, but it doesn't require a DM certificate for this. Just dive with a lot of new and different divers.
Depends on what education you're looking for, but for me, a technical course was much more educational than the PADI DM course. The DM education is primarily from PADI's Encyclopedia of Recreational diving. Granted there's a new edition now, but the edition I learn from was a complete waste of paper.