It is possible to just adjust the checkbox option inside MP-TVSeries config to do so.
Default is indeed enabled, so when there is only 1 season it immediatly goes to episode view, but you can just remove the checkbox. Forgot exactly where it is, but it's really obvious once you look for it, and it is probably a good thing to look at all the other options as well. A setting I love myself for example is the ability to give a warning if you watch an episode out of order, this is not enabled by default.
Enjoy.