What if they brought back 3 C5s for Assault and Recon and nerfed McKay and Sundance? With McKay grapple hook there should be a slight slowdown in movement after using the grapple by 1 sec. When people are looking around for enemies, they are usually looking to the sides first since instinctively that is where they usually are and then they look up. I feel there should be a slight reduction in speed for McKay to make up for that slight delay to look up as being secondary for players. Close range use, 3 meters and less or so, will have no slow down in movement, medium range will have slow down for 1 sec. for example, long range will slowdown for 1.5 sec. and maximum range will have slightly more slowdown for 1.5 sec. Also I feel depending on the range the grapple hook reeling will slow down towards the end for using it at long range.
Similar for Sundance, there should be a delay or slow down in movement and decrease in accuracy/crosshairs spread out more after landing. She can just fly past you faster than you can run so there should be some decrease in mobility and aim to make it more equal. When she is going at full speed, aim in the air is less accurate, and when she lands there should be slight slowdown for a second and temporarily lose 10Hp that regenerate immediately, when traveling at regular speed less decrease in aim in the air and slight slow down for a second after landing, and slow travel speed aim is regular in air and no decrease in movement when landing.
Also I feel Support should get 2 C5s for use to clear out areas and not be able to do too much destruction like taking out a vehicle and to be equal in choice to the other gadgets.