Lists are only part of project management/collaboration, and because that is a situation where needs vary widely and the benefits of customization are huge, it

Lists are only part of project management/collaboration, and because that is a situation where needs vary widely and the benefits of customization are huge, it is futile to try to design an app for making lists. The best list making app is a good scripting language. Wunderlist, Evernote, todoist, etc. all have nice features, but they are just not ever going to work for more than a small percentage of the population.