See the attached picture:
There's a spidertron near the top left, it's occluded by red rectangles and circles from various turrets/roboports/its own vision field. It's hard to see
There's a tank near the bottom center. its triangle has brighter colors than the spidertron because here the icon seems to go above the turret/roboport/... red/green colors
Additional suggestion: also make all vehicle icons render above the blue powerline icons and basically everything
Another suggestion: make vehicles searchable on the map. If I type "spider" in the map search icon, it isn't showing me any deployed spidertrons, it would be nice if it would
And one more suggestion: have a "show vehicle names" option on the map to make them even more easier to spot
Thanks
