not 100% clear on your plan but the core team has refused to increase block size for years.
They only want to scale according to their own roadmap, no matter how good your plan is.
They are decidedly against on chain scaling by design. That's why BU became necessary.
But doesnt segwit also increase the transaction throughput? If it doubles the size of the transaction count, why not use that as a solution for now and then increase the block size later? Safety and security is more important than a good upgrade.
Yes, segwit does do that -- but its a fairly modest increase that is coming pretty late...so we may still get congestion... and on core's terms instead of letting the market decide... And it may not even activate. ...And it greatly increases the complexity of the code. ...And it only helps to the degree to which wallets use it, which is only partial for now.
Like I said - THEIR roadmap. They are giving a tiny bit of on chain scaling, maybe, eventually... while they work on LN.
I know its their roadmap but isnt it safer and more secure than what the Bitcoin Unlimited people doing? There are talks of the centralization of mining under Bitcoin Unlimited, doesnt that concern you?