Tarzan II I would say is maybe the best looking of the direct-to- video sequels. I was pretty overwhelmed by the beautiful landscapes and how grand they were made.
To shortly sum up my impression of the idea of making a so-called midquel: I think it was a great idea, because we did not see that much of how Tarzan coped with his identity issues in the original. Is it handled perfectly, you ask? No, not exactly, but when the movie has that theme in its undivided focus it works out well without any need for words. George Carlin's role as Zugor did make a good impression on me, because I was a little skeptical to begin with. He and Tarzan share some heartfelt moments together, even if the pay-off of Tarzan's search for his identity comes off as underwhelming.
The harshest criticism I have towards Tarzan II is that these three apes, Mama Gunda, Kago and Uto were really unnecessary as bad-guys. They could have made the same impact on Tarzan's life with a smaller role. But it could have been awesome to see more of how Sabor thretened the gorillas, because he seemed like a real threat in the original.
Tarzan II is an okay watch, and kids can enjoy the adventure and the comedy while adults may find it pleasant to see the heartfelt moments. Again, this is a Disney sequel so therefore the original is by far a better movie, but with that said, this is not insulting to its predecessor.