I think if the coin is actively traded on a Dex that means that its community is enough mature to understand the importance.
That's true, but I think decentralized trading via atomic swaps is still a very small niche. So I doubt that many members of a crypto's community are really aware of that. Maybe you could divide your list into two tiers of decentralized currencies:
Tier 1: Mature decentralization (with DEX trading)
Tier 2: Basic decentralization (without DEX, but fulfilling all other requirements).
I'd say the two lists I have (the first one is still empty) is similar to your idea.
I thought I did a very deep research on Bitshares, but the information about them is very difficult to retrieve. I'll research on this possible "late premine" if you can give me some link to read about I'd be happy.
I have searched a little bit and I think what I was remembering was this:
A few delegates are "paid delegates", who are people such as developers working for bitshares. They are also elected by shareholders. For example, Toast (Nikolai) was the first person to be elected as a paid delegate.
Paid delegates get 50 BTS instead of 1.5 when they create a block. However, they are performing valuable services for bitshares such as working as a developer. (If they werent, shareholders would not vote them into a paid position)
While this is technically not a "premine", it is an additional supply dilution added to the Protoshares-based supply. The proposal wasn't imposed by the developers in a strict sense, as the DPoS delegates had to vote to implement it, but the Bitshares devs had a big DPoS voting power, so they essentially could impose most of their proposals. It's the same problem in nearly all DPoS currencies: they tend to have a strong power concentration even if they're "formally" decentralized, thus I have problems to regard them really as "decentralized".
Nevertheless, I regard Bitshares as a very interesting project and it's much more decentralized than coins like Ripple or ICO-based coins like Iota. But I would consider it more centralized than, for example, LTC or even Dash.
I have to apologize I'm afraid Bitshares is not fitting into our criteria. Thanks to you I've made a more deep research and I've found
this article, where we can read as following:
There were a few issues with the PTS launch which, while not born of malice, did point to inexperience and mismanagement. First, mining was announced on bitcointalk only an hour prior to the official launch time, which is not best practice. Additionally, it came to light that, apparently due to an insider starting to mine ahead of time, Mr. Larimer himself began mining early. Taken together, this led to a feeling – not without some merit – that ProtoShares was attempting a sneaky “soft” premine, in which insiders, in this case community members and the inner circle, were given a head start to grab coins with minimal competition.
and also Bitshares wasn't only redeemed from Protoshares, but also from Angelshares:
As a result of the shaky PTS launch, Mr. Larimer announced “Angelshares” (AGS), which was the same concept as PTS, but instead of mining, anyone could simply buy shares. AGS holders would be eligible for 10% of future BitShares and subsequent DACs launched, and offered the network additional liquidity as well as a larger community base.
So we can say it was a kind of ICO or pre-sale, which puts Bitshares out of our list.
Thank you very much again for your hints!