Yes please, need this feature

Export a gannt by selecting a task or tasks. Our porjects are in different sizes. Some are short and some are with a complex structure. See a screen short of current gannt export. As a team lead, I'm interested in overall schdule for all projects. As a project mananger for a complex project, I'm interesting in a "task"/project gannt with subtasks. Hence, it would be nice to export a gannt where you can spcify which task or tasks shoudl be in the gannt.