Olympus is not the only server on ManaCube and given the size of the team of people leading ManaCube, I am impressed there are as few bugs/problems as there are.
Beta testing would allow for these problems to be found, but unless the keep the beta season going for a long time, I do not think it would help solve the issues. And even then, many problems will not surface until the full release.
Operating a server with the size and complexity of ManaCube is not an easy task. And I am not sure you, I, or most people realize how much work it is.
If the goal of your reply was to let them have a list of problems, I like it! But they probably already know all of these issues and are working on it.
I believe that Dacon, or whoever may be leading releases, realizes how much people want to play the fun games. And given that often rushes or puts out a product that is playable before it is perfect.
On a side note, you can add exp bottles not giving valued amount, but acting like a default exp bottle.