Are the Pacers going through a tough time right now? Yes.
Were they playing much better earlier in the season? Yes.
Does that mean this team needs major changes? No.
Looking at every major piece on this team (top 10 player) Only 4 of them have more then 4 full years of NBA experience. Of those 4 only 2 could be considered to be having a major impact on winning and losing. Of the other 6 at least 4 of them have a major impact, and you could argue all 6 of them can.
What this means is this team is still extremely young, and is going to go through growing pains. We aren't ready to compete for a championship full time this year, and that is ok. We need this team to learn from this experience, and become better from it not be broken up over it.
This doesn't mean we shouldn't make a trade, but it also doesn't mean we should be begging for changes to be made.