They always include the latest marquee characters in platoons from phases 4-6. I don’t know what’s different about Revan, but if they want to give us bonus rewards for including a pay only journey character where there would typically be a pay only marquee character, that’s fine with me.
Regarding unfarmable characters & ships in general, they want people to spend money and your guild won’t get the higher phase platoons if you don’t. It only becomes a major problem if your guild is top end and can max out stars with the platoons but not without them. Otherwise, your guild will get the number of stars you can get and that’s it.