when you activate long research times ( or even some later ones at normal) they take quite some time and I often find myself ordering a few research objects at once if I see surplus resources. now, as a few minutes of gameplay develop I may see a certain need to rearrange items, have some things earlier, some things later, like when I unexpectedly lost many ships and want to postpone a ship limit upgrade. or when I discover an ice/ volcanic planet I might want to slip that one in.

if its huge programming trouble, forget it, clicking them off and new again isnt such a deal, but it would be neat if it were possible.