I'm not sure I'd go as far as to say it sucks, but I definitely think it's very overrated in theme park circles and I can see why it wouldn't be to some people's tastes. I went before Lightning Rod, but was quite underwhelmed by my day there and wouldn't rush back.
Liseberg. They haven't started selling season passes yet. I live 500 meters from the entrance and would love to go everyday but I am not willing to pay 40 euros every time.
Is your home park selling season passes?
Joker and Medusa are pretty good, not worth traveling across state lines for.When I went I think most rides were open - but never at the same time. The only one I remember never opening was V2. However, operations were super intermittent and we only got on most things due to luck and being in the right part of the park at the right time. There are also absolutely no standout coasters compared to many other parks in the line-up.