Personally I use Zygor Guide (paid app) and it's latest version will skip quests once they get too low etc. For me it was a simple case of looking at the guide and if I was at step 200 out of 220 in a level and yet I was only half way through a level then I knew I needed to grind. In the actual leveling though, most times I was ahead of the guide and so this allowed me to skip sections which I knew would lead to collection hell lol.
I think the most useful guide for most boxers would be listing which collection quests are a requirement and which can be skipped, this would save a lot of time.