How about allowed creator to create his/her own hint like at the original level? First, when we make a level, there were button to include your hint there. Then type your hint. There's an option to add a hint that appear after you finish some part of level. When you share the level, the hint need to be seen able (after watching ad (like usually) for non premium player)) by people who play our level.
I don't know how the mekorama QR codes work, but I would think that that information would be too complicated for the QR code. I think for shared levels just adding a VS and/or trick list to levels that need it is fine.
A very useful feature for Meko players who aren't using the forum. Maybe the required tricks can also be included in the hints!