There was a time when I considered doing an altcoin. I have some good ideas for technical innovations, starting with multivalent amounts (like colored coins but built into the protocol so you can't mess it up with a stupid client).
I even developed the code for it.
But then before launch I started seriously looking at the altcoin market, and ... ghod, it's a cesspool.
Between exchanges that accept bribes to list coins and blatant market manipulation scams, tactics like burst mining, the outright scamming, etc.... it's the sort of thing you just cannot do honorably any more.
So I didn't.
That is ok. But. Here is the question. why would you make a new alt coin? And now without any offence - Don't you would make it to make money for yourself with it? If you say that you would make it to change the world you know that you are lying to yourself.
So that's why i think that the whole altcoin system and business is just a short, or maybe mid term "investment"