I've watched all Star Trek as an adult, several times over. TOS is uneven, but it's highs are quite high and aged exceptionally well. I'm glad you are enjoying the character interactions. That is absolutely something Beast Wars excells at, and it remains strong in that regard throughout the whole series. Season 2 in particular has some very strong character development. Yeah, if you watch the ones I suggested, nothing in season 2 will be confusing, as all the ones you are skipping are purely self-contained. I'd say if at some point the show truly starts to click for you, go back and watch them. Some are better than others, obviously, but the character interactions and development are always strong. Season 2, don't skip anything. In the whole season there are only two episodes I'd say are weak (the first episode and the fourth), but even those two have some important plot elements. Regarding G1, I also watched that as a kid, the reruns, though I was very young at the time. As an adult, when rewatching, I personally did not think it aged nearly as well as Beast Wars. Yes, the animation in Beast Wars clearly aged, but the dialogue and plot-lines aged as well as any show from the 90s, such as Batman the Animated seires.