Aethelstan
Murderer of Words
Notice that most of the unneeded evolutions were based off of 1st and 2nd gen Pokemon that didn't originally evolve. In G/S/C, a lot of baby Pokemon were added to non-evolving Pokemon, and now in D/P/Pl, there are a lot of evolved forms of those same Pokemon. Good examples are Electabuzz (Elekid and Electivire) and Magmar (Magby and Magmortar). I didn't see any evolved forms of R/S/E Pokemon (correct me if I'm wrong), because those are all still fairly new. In the 5th gen is when you'll probably see a whole bunch of new evo's of 3rd gen Pokemon.
...and yes, Zangoose and Seviper evos would be cool.
...and yes, Zangoose and Seviper evos would be cool.