Given that the miners are incentivized to collect up all the tx's with the most fees and the size of ordinals, they will pay the same as we all do per Vbyte. The free market will sort that out.

As far as the addition to the block size, it could pose issues in bandwidth affecting the Nakamoto consensus algo, making it difficult for a node in a rural area to keep up with the current version of the chain. Bandwidth is an infrastructure problem and it's really expensive.

The jury is still out on that last one.