Hello. Thanks for your very interesting reply. I had an idea to do that. I have some doubts on it.
At first I have to learn what a fork could be done. Probably it is not difficult if I point the attention of the wallets to a local copy of the blockchain. But is there a kit or tutorial for make a private fork of the Litecoin or Bitcoin too? For me it is indifferent. There are no reason to choose the first or the second. For me all altcoin could run. The most important thing is to create easily some wallets, a blockchain and a daemon to run it. Thanks.