Logo:
Beyond Myst: Uru.
Yes, I know it's like Uru: Ages Beyond Myst.
No, I don't care.
Yes, I actually like it.
I think it brings the idea of: it's in the same "world" as Myst, but it's more of a spinoff, different things, "beyond myst".
But everyone want Uru, so I'm fine with that. Uru it is, I guess.
Yeesha/Bahro stuff:
It's a mess, but I never understood why people hate yeesha and the bahro so much. As you said, Uru isn't Myst. I like the "odd" theme in the game. Once everything is explainable, it's a bit dry. Some mystery isn't painful. I used to like the "only explainable things" too, but I found the yeesha and bahro stuff fine enough.
HOWEVER! I DO think there should be side choosing. Like, being autherized explorer with no yeesha content at all, or journey follower with yeesha content. Yes, journey followers have somewhat more to do (journey content auth explorers don't have. However, if an autherized wishes, he can go to a yeesha follower's version of the age and do the journey stuff. But it's still not his age, so it's much easier for the yeesha followers), but from what you are saying, it seems you won't care for less puzzles, as long as there is less focus on yeesha/bahro and more focus on d'ni!
AND! I think that even yeesha/bahro magic should be less odd. It seems that every problem in the game was solved by "let's put a portal here". I think that linking methods in the game should be limited to that: linking books, linking glyphs, linking stones, relto book and linking out of thin air (linking without touching anything).
Linking books- for yeesha followers and autherized explorers. You know... linking books.
Linking glyphs- for yeesha followers ONLY (available for autherized if a yeesha follower shares his personal age version with autherized). These are glyphs on rock and such. Touching them links you away.
Linking stones- yeesha followers ONLY (available for autherized if a yeesha follower shares his personal age version with autherized). You kow what they are.
Relto book- yeesha followers ONLY. This is actually what makes them yeesha followers (relto book owner can share his book with autherized explorer).
Linking out of nowhere- yeesha followers ONLY (available for autherized if a yeesha follower shares his personal age version with autherized). This is simply linking out of thin air, touching nothing. Like in the TPOTS tree-spiral puzzle.
I got other ideas for autherized explorers and yeesha follower, but they are not really belong here.