Zanneck
HAIL NEO ARCADIA. NEO ARCADIA FOREVER.
I remember being surprised when I first found out that the 10th Anniversary Special for Rugrats was getting its own spin-off series and I also recall seeing some very intense debates surrounding it during the timeframe it was airing new episodes; it was a few years ago when I stumbled upon some episodes again and decided to give them another go.
I found it to be an OK or average series, I feel there were other shows that executed its premise better but I also didn't find it as bad as I remember seeing some saying it was during those intense debates and felt some were overly harsh about it (fair enough if something isn't one's cup of tea but I also believe it is possible for one to express disagreement without being belligerent or antagonistic about it).
While I found some episodes forgettable there were some episodes that I found solid and stood out to me in a notable way (episodes about Tommy & Dil's brotherly relationship being an example off the top of my head). I also agree with the sentiments that Dil & Kimi got a better showing in All Grown Up compared to the seasons of Rugrats that featured them; they were some of my favorite characters in All Grown Up and I also found Estes Pangborn to be a favorite of mine.
While I would consider the initial run of seasons for Rugrats (before it was revived) to be my favorite era, I still found myself preferring All Grown Up to the Dil Seasons and Kimi Seasons of Rugrats.
I thought that the series was okay. I don't think it was anything to write home about, but it never got me that upset either. I thought it was usually pretty decent and I kind of liked seeing the Rugrats characters older. They had long since exhausted what they could do with the characters as babies, so while I don't think a spin-off series was necessary, it was the only direction I could have seen the series going by a certain point. Dil was definitely an improvement since he had a personality instead of being used for toilet humor. I also liked how the kids could actually talk to their parents since that offered some different dynamics and conflicts.
I do wish that they could have shown an older version of the Wild Thornberry characters in a special or something though. Rugrats Go Wild was easily the weakest of the Rugrat movies, but since it confirmed that the two series exist within the same universe, getting to see what happened to Eliza and Debbie ten years later would have been pretty cool.
I can agree with this much with both you - whatever they did in AGU with Kimi and Dil (ESPECIALLY Dil!) was simply better than their time in Rugrats, where Dil especially dragged down what was already a show that more than lost its edge after S4 ended. Kimi could have made a fine addition to the main characters in earlier seasons, but by the time she came in to spice things up, the damage Dil had done to the original show was all too much to bear / tolerate as it carried on, unfortunately.