There are several Altcoins out there that aren't copy and pastes, most deal with the notion of interest on coins e.g. Peercoin (PPC) uses Proof of Stake mining and assigns those who participate interest on their coins that they use for PoS mining.
There's also Freicoin which uses the idea of demurrage which functions like a negative interest i.e. the longer you hold onto it, the fewer coins you'll have, which promotes market liquidity and spending.
And finally there's Primecoin, although it doesn't function that differently to Bitcoin from a user's perspective.

Then there are Alts that aren't based on Bitcoin such as EMUnie.

There's quite a lot of choice out there if you're looking for it, and it's not all shifty copycats.