i am really very disappointed, too.
i finished the vikings for a 6th time now, (investing alot of diamonds, which i bought!), the time gets shorter and shorter in which you can win the RS parts - PARTS!!!, not upgrades!!!! as someone said before, you'll probably need a year or two to upgrade the RS to its maximum.
12 days now (in the 7th round) to finish all quests to get 9 parts of an upgrade kit....
and that little space to build all you need, to get enough diplomacy......
no! i finished it for the last time, sorry!
i like the details of the graphics, but that is the only advantage in my eyes