Any updates regarding where this suggestion is placed in the queue?
A lot of mt4 and mt5 EAs have this feature now. As the OP said, this is the only feature that is lacking. Other than the auto calculation of position sizes, there is no real incentive for others to purchase QuickFX terminal.
Even ctrader's native order panel has the ability to drag orders, tp and sl. This in itself is way easier than setting orders, tp and sl in advanced.
Please consider this feature.