The smart move in the future will be to return to small blocks. Small blocks encourage miner decentralization. Bitcoin's current big blocks are useful only for keeping transactions fairly fast - yes, 10 min + 2 confirmation is fast for a base layer, very fast. But now we have lightning, and I don't think lightning is finished developing either, and I don't see any reason why we can't have a layer 2 atop 1mb blocks. The current priority is gaining adoption ; the future priority should be more decentralization. Smaller blocks = more miner decentralization. It is possible that going back to 1 mb won't be needed, if base layer demand is high. But I think its important that the current spam is the thing that makes these big blocks viable. If you want to cut the spam, go back to 1 mb and let high fees price them out.