I hate the interface. That's about it.
For those who say 'it's more like IRL Dominion,' I agree. But IRL Dominion is the inferior version of the game. And for those who say 'it's more appealing to the common fan,' I'm not sure I agree. But regardless, I'm not the common fan, and I happen to hate it.
I can't really imagine spending money to play it that way, even with Dominion being my favorite game. We'll see if that changes once Iso finally goes, but...to me it's just a completely different (and far worse) game.
I find it hilarious that you find what is essentially bug-testing software to be superior to an actual finished product.
This is not surprising to me at all. Often I find the 'basic' version of a program to be superior, because I get really irritated with unnecessary bells and whistles.
I still wish I could go back to Word 97, rather than the monstrosity that is the newest version of Microsoft Office, for example.
IRL Dominion is fun with your friends at a game night. Actually holding the cards in your hand is a tactile pleasure that Iso can't replicate. But Goko is just a poor imitation of the benefits you can get from real life, without capitalizing on the ways in which Dominion can be IMPROVED on the computer.
I'm sure some people prefer Goko. I don't think they're lying to us or something. But I emphatically do not prefer Goko. And maybe it was a smart business decision to appeal to new players who would be turned off by an Iso-style interface. But they have to understand that it comes at the cost of seriously turning off people like me.
You can't please everyone, of course.