The point you seem to be missing is that it is not good to have an incentive for people to create more scamcoins.
All the stuff that is actually needed in the coin world is stuff that can be done with/for pretty much any coin at all.
It is not the coins themselves that are needed, we have way way way to many coins already.
What is needed is services around all the coins.
Basically if no existing coin can serve the purpose for which someone thinks of creating a coin, it is damn near certain that the purpose is not one which we should support.
In short, the purpose is mostly likely just to start a new scam / ponzi / pyramid with the author at the top of the scam/scheme.
Almost any actually useful to the community purpose can be much better served using existing coins, and we could scrap 90% or more of existing coins and still have more coin types than we actually need.
So, having any incentive to create yet another clonecoin / scamcoin / crapcoin is NOT GOOD. It is because scammers see an incentive in starting a scam of their own that we have all these scams already.
Most of the coins already existing are never going to have enough hashing power to be secure.
Securing a blockchain is insanely expensive. We cannot afford to secure more than a tiny fraction of the coins already in existence. More coins just dilutes the hashing power more, making more pathetically vulnerable blockchains.
There are way too many coins already, any use anyone other than a scammer is likely to have for a coin can be much better done using existing coins.
What makes the creation of new coins tempting is simply what makes it tempting to start any other pyramid/ponzi scheme: the desire to be at the top of the scam/scheme.
The very fact that it is so tempting makes it abundantly clear the objective is the scam/pyramid.
That is why you see serial coin-creators too, they launch a new coin, dump, launch another and so on. Total scam.
Making the scam even more lucrative by pre-mining or insta-mining just makes it more of a scam.
Also, for the most part they are not creators at all, they are just taking someone else's work and re-naming it and maybe changing a few numbers here and there to pretend it is somehow "different", or adding more blockchain bloat (like this datacoin thing), or any other hack they think might fool people into thinking it is somehow "new" and/or "different".
Consider the sci fi coins even, those would be much much better as simply "themes" for bitcoin, they could for example code in a hard "conversion rate" from whatzitthingies to bitcoins, and display all your bitcoins as whatzitthingies, and you'd have a pretty bitcoin client that uses your sci fi race's word for money as its word for bitcoins or for 0.123456 bitcoins or for 1/1337 of a bitcoin or whatever. All the fan theme stuff, with a really valuable coin underlying it that is accepted "everywhere in known space".
-MarkM-