I'm the TeamPulse Product Owner and I've been watching this thread with interest. I'm always looking for areas where our product could be improved and I want to better understand how people are using the product.
For your case, could you just replace your parent task with smaller tasks?
Parent Task 1
Sub Task 1.1
Sub Task 1.2
Parent Task 2
Sub Task 2.1
Sub Task 2.2
Would become this
You would lost some context, but you'd get all the benefits you listed.
I'm not trying to make excuses for a deficiency in out product, but I'm just trying to see if we can give you a plausible workaround until we catch up to your needs.
the Telerik team