Obviously, this will vary per channel, but really our strategy for increasing your views with optimizations comes down to this:
Find keyword pockets that you video targets and is ranking for
Create a content strategy or optimization strategy inside of those keyword pockets
Create content elsewhere that ties directly to the content being made on Youtube
With these three elements, you can easily take over low volume keyword pockets on YouTube. When it comes to more popular terms, the more time, the better you will do.