Pole arms on Morrowind were definitely not the best, but provided a fast, and a some what long-ranged attack (not sure about the last part). Ever since Oblivion came out, the spears vanished with no explanation. As well as these other weapons..
1 - The Crossbows
2 - Throwing Stars
3 - Throwing Darts
4 - Battle Staffs (Which weren't that good, but can be when enchanted).
5 - The Short-Swords (Wouldn't have been very important on Skyrim anyways, but can benefit assassinations from behind, or if you want to get some fast cuts on your opponent. The Short-swords were weaker than Long-Swords, but had greater damage than the Knives).
6 - Daedric Crescent?.. (Not sure if it's on Skyrim or not, But it was a VERY rare item. In fact, it was the rarest. If it's not on there, I would love to have it back on. If it's like Nettlebane on Skyrim "Being the oldest item that ever existed", and unusable, that would be fine.
Well.. 5 (or 6) weapons! What has gotten into you Bethesda? I loved all of those weapons until you removed them

Think about it, Bethesda.