There are a lot of altcoins out there. Each one trying to be different. But I think that with this process of trying to be different, many coins are just running around in circles with pointless features.
What coins do you support and why those coins?
I personally like altcoins with an easy paypal -> altcoin transfer like dogecoin had. Mobile wallets are a plus. PoS and no premine obviously are important. A marketplace where the coin is accepted is great too. But these features are rather simple and are the basics for most altcoins. What coins stand out to you and why?
I wouldn't agree that POS is a basic feature that's important to all. Some POS coins are still vulnerable to attack, and some people just don't like POS.