Once you grock on the fine tuning of scoring systems that is available, at least it's available through MFL, it's possible to evenly weight each position relative to the number of starters, league wide, at each position.
Such a system is termed an Equally Balced Scoring System as it places the player positions relative to the number of starters that appear within the top scoring ranges of a given league scoring model.
An example: if there are say 17 total starters, + 2 (PN/PK) for a total of 19 starters and there are 12 teams, each position that starts 1 player (TE or DT say) would have the 12th player in the league scoring model appearing between the 192ed and the 204th scoring position (i.e., before you get to the 17 X 12 = 204 scoring position). If 2 starters (DE, CB, S) at a position, the 24th ranked player falls into the same range, if 3 starters, the 36th ranked player falls with the same range, etc.
It's not easy to create such a scoring system, but it's possible cause I've done it and will look to fill the League after the MFL re-set at the end of this month. If you have an early interest, PM me as I won't formally post to fill this league untill first week of May.
I just can't wait to see how Draft Dominator chews it up and spits it out
So as to the relative value of OFF vs. DEF....it's all a function of league set-up and how many hours you all willing to put int the creation of a scoring system. If they (all the positions) are all equal, it's a lot more challenging....at least it is in my book. You get to keep track of a lot more information that effects the outcome, it's not just the standard QB, RB league.