Yeah, that's one thing to consider.
Is mechanical "stagnation" the same as game "stagnation". For example, there are people who still play 2e, who have been playing 2e since longer than other editions of the DnD existed from start to finish. Is 2e mechanically stagnant? I can't imagine it isn't, considering it is a discontinued product that has no official company making rules for. But is 2e itself stagnant? I mean... not really, people still play new campaigns and have ongoing stories for it.
So, maybe 5e doesn't get the mechanical revolution I want (which would be upsetting) but they could revolutionize the STORIES and the Campaigns. That could be an interesting thing to see in the future.