Then that would require faction members to organize themselves and not to bring caps out there alone. They should bring a diverse fleet to cover all possible threats, use strategies and tactics to win instead of simple numbers. It would be interesting to see a contest about who's cap survives longer.
@NonSequitor
It's not only the rarity of an entity what can ruin the sense of immersion, but the utilization of said entity. If it's being used or placed illogically, e.g. a random Nephilim flies by Manhattan or the Rogues try to lock down the California Gate on the New York side, such decisions, or the existence of such things at those places are illogical. InRp no foreign cap would be able to get into New York without invitation, let alone Manhattan orbit, and similarly, inRP the LPI and LN both have the force to take down in not time any Rogues trying to set up an installation in such an open part of space like the vicinity of a jumpgate. It's not about "I wanna be a unique snowflake", rather "I'd like to see responsible unique snowflakes around".
Also, make Novas 5 times more expensive, instead of 3, but I don't think that would make too much of a difference, powertrading will happen anyways.