This page is used to collect ideas for projects that could be done for Calligra. It could be anything from refactorings of internals to a new application of an extension.
In principle anybody could write here and the idea could be reasonably small or very large.
When a developer decides to use an idea and create a project from it, s/he should create a project page under Calligra/Projects. See the policy for projects at that page.