I have not abandoned this project and will ensure that I implement all the features along with a few more that the German community requested.

That sounds very good :-)

In my opinion, everyone on their computer should use Steem Keychain as it is the safest way for one to interact with the Steem Blockchain.

I agree with you. If users do not want to use KeyChain, they have to enter the key somewhere else. And this is not necessarily more secure. The default method of logging in once and staying logged in via the cookie is not much better.