With the rapidly growing library of games for Linux on Steam, at roughly 23% right now and of which all the games I play are included, using Ubuntu at all times has become practical for me. Since Windows is not my preferred environment and I'm a huge fan of the RCT series, a release of RCT:World for SteamOS/Linux would be awesome.
Unless you are in the know, spare me the usual pointless Captain Obvious lecture of how it probably won't happen. Us Linux users are all painfully aware of that likelihood, especially since those who marginalize Linux love to restate that case all the time. However, I recall hearing the same rhetoric in forums for Civilization 5, Borderlands 2, and other major games which still got their Linux port, so it isn't unheard of. Ultimately, ether Valve will convince them or the community will, so post in support.