That definition was drawn up to explicitly to get people to commit to vote against the Conrad plan. Available day one (no triggers), nationwide (no state balkanization), answerable to Congress and the voters (as opposed to answerable to states that lack bargaining power at the federal level).
There's a lot more thought given to this strategy than I was giving credit. You'll learn from reading the post how this works to get progressives commit to a strong plan that can only get stronger and how it catapults fiery rhetoric (think Harry Reid) that is frittered away in procedural mumbo-jumbo.
This is an action to get behind