[quote=@Willy Vereb]
<Snipped quote by Mikellh Dejax>Like I said, either offend you or steal something.
If you don't think there's anything valuable they just take away (keep in mind their tech can deal with non-corporeals to an extend so taking something borderline conceptual is also plausible) then just assume they did something bad to you otherwise and now those people are hiding somewhere deep within the Federation.

Granted, Starfleet or especially local border patrols panicking and firing at you out of reflex is indeed possible. But I don't feel that'd be even remotely enough to bother you.


[/quote]

What if they managed to destroy the Builder's suit? It'd be enough to have the Congregation see the SF as a threat, and since they've already tried to use a diplomatic approach and failed, they'd resolve that the only course of action would be war.