People keep saying they want a melee assault but there has to be a reason they want to be so close to the monster all the time. I would just take the idea they had with the new medic, and have each sword strike on the monster decrease shield cooldown time.
Someone else had the idea to link the leech to another basilisk soldier, but i think a laser theme would be better. A blue laser sword to match the shield, as well as having something that fires rounds like Hank does (maybe dual wield pistols?) to add some range. The third can be some sort of limited range grapple or leap that can close the gap on a moving monster.
And if anything like this makes it into the game please give us a female assault character, change it up from the giant man/machine stereotype. Thanks for reading.