I think that it would be better to be able to NOT swap for the same poke u traded in. Eg. It would be good if u couldn't obtain a CursedBergmite for trading in a CursedBergmite. I have wasted many points by obtaining exactly the same poke as my original one but just from someone else. I think that this should be taken into consideration and would make Wonder Trading more efficient.

Would be handy to not swap hundreds of points and keep getting the same thing you're swapping, but what else really is there? Everyone's swapping x Poke, so there's really nothing else. You might get lucky and find someone has swapped something different than x Poke, but you're not going to find something that people aren't swapping.
So it's working exactly like it's supposed to.

I know what you mean. But maybe we could change it so that u would only get the same poke back if that is the last option. I've been swapping Pokemon x and I happen to get the same one back. I then swap again and I get Pokemon y. This shows that there are more than just one type of Pokemon in the trading system, and I think they should be ordered in what I have suggested above.