I am not talking of giving people a "free ride." However, if you are having a difficult time recruiting this is something that needs to be looked at. Are reimbursements going up or down? Are people in general making more money or less? When you made partner, maybe three years wasn't too bad a deal because the money was real good then, but since then, maybe the numbers have gone down. I am just playing devils advocate here. Were that to be the case and you were looking for people who didn't want to sign up, then there is nothing wrong with decreasing the track time if potentials are telling you it's too long. Obviously, get some feedback. How much money are the partners really going to lose off one year shaved? Something so significant enough as to not have enough help and be working really lean and possibly lose the contract? I don't know. Forest for trees.
Continuing to do the same thing just because it's always been done this way even as the landscape around is changing around seems stupid to me. It's like "I was abused and so you must be as well" just to be doing it.
To each their own. Let's agree to disagree on that.