Ok here's my thoughts, point by point
-What you think about modding?
Modding is a way of exploring ideas, be them your own ideas (such as Inferno) or extending the original idea (BWO and Derelict) or merging to ideas (BSG, TBP, Wing Commander Mod). It gives you the ability to change the game and make it more your own, to weak the game experience and correct original issues. Perhaps the biggest thing Modding allows for is life extention of the game. If HLP and GameWarden and the other places FS Modders hang out didn't exist, Freespace 2 would be dead. people would have grown tired of playing it over and over again. and that really is the point, to create new gaming experiences.
-Do you think FS2 Modding is easy?
I think it could be harder, but with the release of the source code and the existence of FRED2, its more simple then games that are closed off to development
-How would you describe the impact SCP project?
its what keeps us going around here. all the other project benefits from their work and it helps keep Freespace current. Look around the net and see how many other games this old have such active communities. I don't think you'll find

of them.