It's all about preference, so little in fantasy is ever WRONG, or taboo. BUT...you ask me? IDP is too much. It clutters the "system." Besides, why add the IDP if you already have the team DEF? It becomes redundant. When fantasy settings start adding TOO many roster spots or get cute with point values, I cringe. For instance, I am in a new league (attending the draft in two weeks) that I just found out has RETURN yards for individual players AND team DEFENSE. I asked that if, say I had Maurice Jones-Drew and Jacksonvile's D, would I get double points? I was told, "oh yeah, I guess you would." An example of getting cute, when it is pointless.