Sorry to hear you didn’t get the job. You’ll get 'em next time! On the other hand, maybe you dodged a bullet if they treat their employees badly (which wouldn’t surprised me based on how they treat their interviewees).
I haven’t interviewed (for any type of job) in a very long time but when I hear about companies sending candidates home with a full weekend’s worth of work, I can’t help but think that that is a big sign it’s a company I probably wouldn’t want to work for anyway. My way of thinking for that is that they’ve already seen my portfolio. They know what I can do from looking at that. I shouldn’t have to ruin my entire weekend just for them so come the same conclusion. Plus, I also can’t help but think that they are just getting me to do grunt work for them. LOL. An interview is 90% about getting to know who the person is. If they want to ask me a few questions and test me on my on-the-spot knowledge, that’s fine. But giving me homework for two days?
I don’t know how common this type of “interview” is in the industry, but I have a feeling that if I were asked to do something like that, I might just tell them to stick it and walk out. That might extend my job search somewhat. Haha.