Explorers will be opening new territory and selling information about the same. Factional powers might be very interested about this or feel threatened by expansion possibilities that might upset power balances. It could even be that explorers are funded/protected by the factions in addition to working independently.
Pirates, organised or freelance, might not be the only human threat an exploration enterprise might face. I hope that disputes about new system ownership generates bountiful game playing opportunities. I know some players want a peaceful life soaking up the light from unknown suns but what they see and know will have real value.
The Frontier is a dangerous place for everyone.
Just my daydreaming guys.
I like the way you think. Finding new lands for major powers was after all very important in the past. Why should it not be so in the future. I am attracted to the idea of factional conflict and expansion. Hopefully the major powers will be able to expand over time. For only then will we feel part of a living universe!