Your suggestion indicates a more trivial understanding than you are letting on.
Nodes can gradually come online and slowly but surely prune low-bandwidth nodes first and continue to increase support for larger blocks, all while creating a false appearance of organic growth.
I mean this is basic stuff and you can choose to ignore it but it pretty much makes the idea doa.
No, its just stupid.
Why waste your time gaming block size when you can profit by gaming non-FSS RBF with guaranteed results?