It's their beachhead inside a Vex stronghold. That sounds important to me.

*As the Wolf forces itself to its feet, Samus stops the wavebuster, opting to conserve heavy weapon energy for the moment. Her enemy gets a moment's respite as she charges up a more mundane shot from the wave beam. She hopes, though doesn't expect, that the abrupt end of the wavebuster will throw him off balance long enough for her to stun him with the charged wave beam. It's nice to hope.*

We've cleaned up their houseguest problem, they're probably hoping to step in and roll over us while we're still tired from the fight. Thanks for the heads-up.