ASL has been working on this new feature for almost a year. It is now fully ready and it is most beneficial for MLB DFS contests.

Stack Attack enables you to build up to 150 lineups with a broad distribution of team stacking across all teams in the contest and across all projection providers in ASL's optimizer.

This gives you meaningful diversity, because rather than forcing diversity it is coming from the different player values across multiple projection providers, and it gives you wide coverage in your contest to give you a better chance to win.

This short video gives more details about how it works and how to set it up in ASL's DFS optimizer