2mb would be practically harmless. There is no real immediate downside from such a small increase.. and it does not require wallet code to be rewritten on every platform. It is certainly better than letting blocks get consistently full @1mb, dissuading new bitcoin companies from opening up their doors because BTC can't scale, and pricing hundreds of users off the network, or causing their transactions to take 2-3 days in some cases, not to mention contributing to the rise of altcoins.

At this point, we don't know when segwit will be ready. I'm all for having both, but there is no reason to keep stalling for changes that could be made immediately. People are dropping off the network left and right, and I'm afraid that the serious stall tactics combined with a lack of any leadership whatsoever in the BTC space is going to continue to cause increasingly compounding problems.