Hi, thanks for trying it out!
I agree with you; the manipulation takes a while to get used to. There are shortcuts on the website for most of the actions which makes the process a bit easier.
Being a virtual deck it also doesn't check any rules or have any rules for that matter, anyone can edit the deck in real time willy nilly.
This is actually a conscious design decision; there are some card games which rely on this very fact.
The Virtual Deck is a nice idea but for anyone to really utilize it I suggest you add full on games with rules etc with automatic shuffling and placement of cards etc.
I thought about this, but decided against it for now because I wanted to give the players as much control over how they play their card games as I could. Some people have different ways of playing the same game and I wanted people to be able to play exactly how they like to play.