maybe use your ravana to get kills?
it sounds skill issue.
other than skyros, your robots should be mainly used for kills.
even as pathfinder, you dont just sit at the spawn or meters away from your team and get your teammates hunter stacks. Some people managed to brawl with it.
if you cant use ravana, thats fine. It isnt meta. It isnt made for sniping. It isnt made to tank as ammit does. Dont think too much about its role. Just try to see how it performs in different kinds of situation to understand how to use it properly. Also, dont expect it to work with anything. Thats why testing different builds is good to know what fits better on it.
idk what is the point of needing to have certain roles in your hangar.
if anything, snipers are the least useful in the current game's environment as there a lot of robots that can close the distance between you really fast and kill you quickly.