The price difference between a card graded 9 and one graded 10 can be enormous
Stage 2 decks require more time to set up and are not too popular unless the Stage 2 is fulfilling a support role (usually supporting Big Basics)
However, it is no one-trick pony, and the mill and recursion plan offer some resilience
Edit: test didn't go well, but we can do something on the sidelines for sure, as Azrael posted below
Temporary Lockdown can be compared to Culling Ritual, which has been a mainstay in various Golgari lists, and now white color gets a similar treatment, albeit no mana is generated in the process
When theyre milled, theyre no longer relevant, so they provide food for Dragon Rulers