That approach automatically prevents any progress until a new civ is added. If we defer a decision until that is known, it inherently depends on investing resources into including a new civ, which is a waste until the new civ can actually be added.
Goals of a Kievan civ will always exist in a different context than partial goals of a larger overall Russian civs, and goals can only be evaluated in combination. It's not like we can think of good Kievan goals and then just port one of them to current Russia. A goal that may work well in combination with two other Kievan goals does not automatically make a good addition to the Russian civ.
That said, I think Orthodoxy is a good direction to go in. That is an important feature of both the Kievan polities and especially Muscovy, which early on claimed to be the successor to the Roman Empire and considered the Metropolitan of Moscow to be the highest ranking representative of Orthodox Christianity. Also, in one of my games (not the one I ultimately won with) Catholicism actually spread to my cities before Orthodoxy did, and I genuinely debated the reasons why I shouldn't just embrace it. It would have definitely made dealing with the rest of Europe a lot easier. So having a goal that makes you stick to Orthodoxy would be good.
Goals of a Kievan civ will always exist in a different context than partial goals of a larger overall Russian civs, and goals can only be evaluated in combination. It's not like we can think of good Kievan goals and then just port one of them to current Russia. A goal that may work well in combination with two other Kievan goals does not automatically make a good addition to the Russian civ.
That said, I think Orthodoxy is a good direction to go in. That is an important feature of both the Kievan polities and especially Muscovy, which early on claimed to be the successor to the Roman Empire and considered the Metropolitan of Moscow to be the highest ranking representative of Orthodox Christianity. Also, in one of my games (not the one I ultimately won with) Catholicism actually spread to my cities before Orthodoxy did, and I genuinely debated the reasons why I shouldn't just embrace it. It would have definitely made dealing with the rest of Europe a lot easier. So having a goal that makes you stick to Orthodoxy would be good.