I'd welcome zeta mat packs. Price them out of reach for guppies, that way not everyone is drowning in zetas. Put a cap on per-month purchases. Whales get a slight advantage and devs get money to make more exciting content for everyone to enjoy. Wins all around.
Don't be that guy that argues P2W is a bad strategy. Those guys don't dump thousands into this game to watch you grow at the same pace. Give them a little incentive to spend, before EA closes up shop and shuts our free Star Wars game down.