maybe this link would be interested for someone? https://medium.com/@krzysztofurbanowicz/what-is-the-problem-now-with-scalability-of-ethereum-network-and-how-to-cope-with-it-41168f153775
Here it is described problem with scalability of network and why we need the hardforks in Ethereum? This is of course my understanding of problem.
Do you think the metropolis hardforks will solve the issue?
All the best.