How many Champions will it be assumed a lvl 30 owns?

The level up chests are supposed to scale with you, giving more Champions at early levels and more cosmetic options at higher levels.

Sounds great on paper, but where does that leave everyone now? Is it going to assume we've got about 20 Champions, just barely ready for Ranked? Or is it going to assume we have more than that?

It just seems to go against the system to give those of us with all the Champions the same level up rewards as those of us that barely hit level 30. In this new system we would be at very different levels, so shouldn't we be at different levels to start out with, based on our champion needs?