If you've already got 121 time and there is no upgrade in your future any time soon, it might be nice to try out corporate for a while, especially if you have a chance at getting some TPIC.
Just remember, it is a whole different ballgame. You will be the one cleaning up their mess in the back of the airplane. You will be the one responsible for making sure Mr. Big has his favorite drink on board. You will be checking the weather, doing weight and balance, and having to explain why showing up with 3 extra pax 10 minutes before departure is putting him in an unsafe situation. You will be the one explaining why you had to divert to an airport that's 10 minutes away.