I miss the time on ISO when you could see which cards you had in your deck. I would like to add to that to also see what cards are still in my draw pile.
Wasn't that an extension?
Yep. On Goko, it would actually have been easier (arguably) to do draw pile tracking than on isotropic. I did some testing around the launch and found that you could hook into when cards are transferred between different locations in the interface, eliminating the need for log parsing entirely, which is nice. On isotropic, I think that to do draw pile tracking, the log alone would not be enough (unlike for deck tracking), and you'd need to look at current hand contents also and combine the information.
I miss the time on ISO when you could see which cards you had in your deck. I would like to add to that to also see what cards are still in my draw pile.
And my opponent's hand.
I assume you're joking here, but an interesting thing about draw pile tracking is that it's not symmetric, in the sense that there's enough information available to know your own draw pile contents exactly, but it's not even possible to know the exact combined contents of your opponent's draw pile and hand. The reason is that not all cards are revealed when discarding.
This has a practical consequence that makes draw pile tracking problematic. The isotropic deck tracker extension and Salvager's point counter both provide the same information to you and your opponent, so that it's fair even if your opponent can't run the extension for some reason (like if they don't use a compatible browser). Since draw pile tracking is asymmetric, you simply have no way to tell your opponent what's in their draw pile, because you don't know. This means that if your opponent weren't running a draw pile tracker extension, there'd be no way to provide both players the same amount of tracking.
That's one reason that I didn't pursue trying to write a draw pile tracker extension for Goko. (The other is that it's a decent amount of work, and not very fun work, apart from the initial reverse engineering.)