Hah. I have wanted to do the Mandalorian Raiders flashpoint but this stuff sort of has me wondering if it's worth it, assuming that people are even dumber at level 25-30.
Edit: I realized now that after last night I passed the level range for that flashpoint. Oh well.
Sometime playing in an inexperienced group will just add to the fun. You get used to the common beginner's mistakes and use the tools you have at your disposal to compensate them.
Highly suggesting you do those fps that have no hardmode while you are at the appropriate levels. Mandalorian Raiders was one of my favourite fp before the nerf (yep it was long time ago).
All the lowbie fps are still very fun and challenging. I actually have problem now that most people queue them over-level and make the encounters boring.