Any alt-coin can be listed if the alt-coin devs build a gateway. They create a token for it and provide a translation service between the two. Unless a future version of DEX will provide a generic gateway service that can be purchased - Gateway-as-a-Service.

Now there is an idea for an ICO.

Is there a step by step guide for verification and whats required?

I downloaded the idnow app and did contact them, was fairly easy. The operator will ask you a few questions, in german or english. And you have to show ur id or passport which you have to tilt a little bit up and down.

Once that's done they will verify you. Takes less then 3 minutes.

After that you have to wait for verification from waves itself, which could take a few days. I'm still waiting for that 2 since last friday.

Waves don't need more altcoins in dex! Waves need a NEW DEX! Too many bugs, fake assets and others things..
A new Dex with a couple of new good project based on Waves and the 10$ will be just a starting point.

Can not agree with you. Waves currently offers the best and fastest decentralized exchange in the crypto world. I have not seen anything better so far and I have tried some.
What do you mean with "fake assets"? This is the nature of a decentralized asset exchange/market that everyone can create its own tokens. You just have to find the right one for you. The only weakness of the Wave Exchange is its surface and the lack of user friendliness. This can be significantly improved.

If it takes 3 minutes, do they run any checks on the identification number? Also, how do they know that the person they are talking to is involved with the token and it is not fake?

For the token verification there seems to be no special process, you have to earn trust: http://support.wavesplatform.com/topics/3219-how-does-one-verify-an-asset-created-on-the-waves-platform-get-the-green-checkmark/.

What does this have to do with WAVES?

And they don't even have their own thread yet, hence hi-jacking this waves thread!

Do Waves can be more popular and have more alts as ETH in future?
Is it technically better than etherium blockchain?