They could actually make this work.

• Have a recruitable Volus biotic warrior who you pick up in a nightclub and has romance dialog options.

• They go hang out in some big room on the ship, like a cargo hold.

• If you choose the romance options, more Volus just start showing up on your ship with no explanation. Like the next time you go in the cargo hold there’s another one, then two more, then you start seeing them in the mess hall, engineering, medbay…

• There’s either dialogue options to ask what’s going on (and kick them off the ship) OR there’s more romance dialog options, but you can’t do both!

• If you keep choosing romance options, they eventually all show up in your room at the same time. It turns out that when Volus take a new partner, their whole extended polycule is allowed to vote on whether or not they approve of the new person being added to your dynamic. There’s a whole scene where you and your new partner have to lobby, bargain and plead for them to include a human. Maybe whether they accept you or not has to do with other choices that you’ve made.