We also need to testrun a permanent 1MB cap altcoin. We haven't got one of those yet.
which is false
Sorry I was unaware of one. Can you post a link to this altcoin?
for simulation/proof of concept just start an altcoin with tiny blocklimit and see how it pans out or alternatively use Bitcoin.
So far Bitcoin and various altcoins with 1mb blocklimit have been working flawless for years, so i don't know what you actually ask for.