I would be great, if the task dates could be entered in fields "start date" and "end date" in writing. This would help inserting several tasks with the same data, instead of having to adjust them manually by dragging.
I would be great if you could choose in gantt >> under "options" to show the date of milestones in writing, like you can for tasks as "start date" and "end date". Most users know this from Microsoft project.
It would also be great if those date fields were standard and you could edit those dates directly in those fields without having to zoon into day zoom and drag the gantt-lines manually