Expanded treeview functionality, please!
2014 ushered in a 'new' wave of organizational tools; modeled after OrgMode. Workflowy / Moo.do / GTDNext are web apps where the primary backbone is dynamic outlining and tagging. In particular, I love the ease of organizing my ideas and projects in an outline / tree, with smart use of tagging for search/filter/time planning.
These tools are beautiful and functional because of their simplicity and unlimited branching into subtrees. But they all suffer from the limitations of plain text. That is, I might still want to integrate photos, spreadsheets, etc. To work around that, these tools are beginning to explore evernote integration, or embedding url's to cloud files. Then they would begin to get clunky and lose the simplicity.
Tagspaces can combine the best of both! Without third parties! It can do better because of the power of its using and tagging original files on the local disk. Indeed, files and folders on a hard drive are already in the right format. Treeview is already displaying the hard drive as an outline, using the folder structure as the hierarchy. What if we could dynamically rearrange the file structure by dragging and dropping, and using keyboard shortcuts, in the same fashion as Workflowy? Imagine if one could add a new text file describing a project or a task and add files (spreadsheet, powerpoint, whatever) as a 'children' of the text file descriptor? Tags can be added to add additional context and smart filtering. Imagining the possibilities is awesome. This would be the best productivity and organizing tool anywhere.