Why don't you use a existing and dead coin and revive it? There are so many altcoins which already exist. You just need to fork the source code and find a community.
Might not be as easy as you put it. I mean, you *could* fork existing code and find a suitable community, but there are other intricacies of making an altcoin and a compatible miner. Also, you need to understand the different types of algorithms. Pick one suitable to your needs. Understand POW, POS etc. You would need to integrate with pools/create a new pool. Server management, load handling, etc etc. Lot of serious work really!
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
But you're probably right. There are enough altcoins out there as it is. Unless the idea behind the coin is really solid, I don't understand why anybody would bother using it. A community is definitely important!