Bitcoin needs to do an Uber and scoop up as many users as fast as possible round the world before gvts, regulators, and banks can stop it. we may already be there fortunately but we do have a ways to go and it's clear that 1MB is an artificial cap on growth.
That's the biggest concern I have.
Bank-based Bitcoin competitors are not stopping to take a break and study issues - they are actively working to hire developers and build systems that can grow faster than Bitcoin.
Meanwhile, the anti-scaling crowd is telling us we need more time to study the scaling issues even though they've been saying that since the first time this issue came up in 2012.