Both sides - "big blockers" and "segwitters" - have valid arguments in my opinion.
Segwit = big blocks. They are not opposing sides.
Well, "big blockers" for me are the guys that want to stay on-chain even with microtransactions and want 8 MB or even larger blocks
now - and so run Bitcoin Unlimited. Segwit means "bigger blocks than now", but not really big blocks (<4 MB).
So the goal should be to find an agreement (Satoshi Roundtable Consensus 2?) on block size [...]
Simple: Segwit then implement a hard fork for a base block size increase to 1.5 or 2 MB.
Yes, that would be an ideal solution. However I am not aware of an initiative that actually has the goal to convince the miners that are blocking Segwit from that kind of solution. If there is any and there are news about it, I would be glad with you or anybody else providing me a link to it ...