Starfleet Jedi

The Killer cats from wing commander at their peak discover a wormhole leading to the b5 galaxy and decide to conquer it, they start off in Minbari space and have to work they're way from there on out

hows this go?

Interesting. I'm a huge WC fan, so this is right down my street.
The Minbari would be no match for the Kilrathi stealth-ships, nor would anything else except the Vorlons and Shadow-puppets. The multi-phase shielding likewise requires special torpedoes to penetrate.
I've only seen B5 a few times, and I have to say that it seems simply too stupid to exist; so I'll give it to the kitties. It also seems to get up its own arse quite a bit, so to speak.

I only know the Wing commander movie. But considering this movie, I'd say that the » Killer Cats « would be stranded at the other side of the wormhole because they have no nav-com for the Babylon 5 galaxy let alone any other data for it to calculate their FTL jumps.
And considering the fact the they needed the Pegasus nav-com to jump from the destroyed Pegasus station to Earth and that the Terran Confederation hasn't cartographied any stars any more since the extermination of the pilgrims, I doubt that the » Killer Cats « would be able to go anywhere in the Babylon 5 galaxy without problems.