Whatever value you think there is for you getting $2 packs to flip, the same value will remain at $5 or $10 packs, if not more, because the market will not nosedive/freefall like it will with $2 packs.
A gradual release is not the answer, as you are just begging for thousands of players to get upset and unmotivated which will come with plenty of negative attention and stories....and demand and momentum will be lossed.
We are in beast mode, we should not be making anything more complicated then it should be.
Every single player that owns assets loses if $2 packs come out, and a few people chasing a few thousand dollars in pack markups will lose a few million dollars in their collection values.
RE: How many Chaos Legion should there be? (LONG ANSWER)