No but I do get to sift through lines and lines of code at times trying to figure out if I've found a bug or it's because I'm not using it correctly. Today, for example, I found a case where I'd created an empty template layer (with a _before template defined), the layer was called and shown but I couldn't seem to add anything to the layer with wetem::load after it, but if I declared it as a layer that wasn't an empty array, it worked as expected.
(Basically that's me just being lazy and using that for area navigation and declaring it once in the header function before going off to whichever specific area. For a similar amount of effort, really, I just declared the navigation block as a block in default, then added everything after that to default with add instructions. Effort's the same really, it's just very slightly semantically different.)
Did I mention I'm playing with createList?