Counting the number of full blocks in a row is a bit restrictive. Why not look at something like what percentage of all blocks in a month was full?
Because everyone has his own point of view.
The only way to do something - is to do it and wait for others who agree with you in consensus.
All other ways are demagogy and wasting time.
If you want your own rules for BIP-10x - you are welcome to write and publish it.
You are also welcome to make changes in BitcoinCore and publish your client.