Another game I played before this hit the decade mark. And by that time, all the code was completely obsolete, inefficient, and unmutable to additions. So they had to rewrite the game from the ground up. And it took over 2 years for them to get everything streamlined so they could update it when they wanted.
I'm just doubting Turbine would want to budget for 2 years of behind the scenes work that no players would see immediate benefits from.
In a perfect world? Sure. I just don't know that it's feasible with DDO right now.