Oh fair, I missed that they could still be used in battles. Thanks for clarifying! That does somewhat alleviate my concerns about whales, as they won't have a built-in advantage from the way it's designed.
The wagons are sort of moot, as it's proportional to number of packs. A whale buying 20k packs will pay 10x more than someone buying 2k packs. So while it's more, it's not proportionally more. If the wagons were revamped so they were exponentially expensive or something, I'd agree to this point.
I'd really like exponential cost on the wagons, as even with the point above, I think whales have huge advantages in this. They can afford to buy a ton of packs in bulk for cheap and sit on them as long as they want. Of course that is their perogative, but there is nothing incentivizing packs/cards to be sold. One of the huge wins IMO of CL (oversupply issues aside) was that it made a good deck accessible to people without a ton of cash. This is not looking like the case for rebellion, and the way the system is designed, it feels like the vast majority of the rewards will be going to whales.