1. Its best picture quality was during Freeza's arc I loved the PQ of the entire arc it was such an fantastic way of enjoying the series, plus the music placements didn't really suck this time.
2. New animation gave the series a new look but didn't always fit despite the smoothness it has.
3. The series' being smoothed was a great idea, I liked it, but it didn't look all that better other than the times they used 35/36mm (don't know exactly 35 or 36 film reels).
4. Clean and high quality Japanese audio something which the Dragon Boxes Z should've had too.
5. Colours look great better than on the Dragon Boxes Z or FUNi's DBZ Blu-rays' Levels (imo).
The Negative:
1. Inconsistent animation - OP, ED, new scenes added to the old footage didn't really go all that well to make it seem unnoticeable which might be inconvenient to some viewers.
2. While I was watching DBZ Kai Part 7 on Blu-ray I noticed a crapload of white dots on the episodes with Cell and the others, this did annoy me but not to the point of turning it off.
3. Smoothing, new scenes, old scenes.. Kai is a refreshed version of DBZ and new for the younger generation but it still looked like an old anime series.
4. If Toei Animation cared about their fans/audience they wouldn't have hired Yukio Nagasaki because most of his placements are flawed/repetitive.
Extra: 5 - international dubs seem to like to add swearing, just look at the Catalán and English dub for example, the Catalán's got cuss words like "shit" and English (FUNi) such as "bastard" and whatnot. Sure there's profane words in the original Japanese but not always (iirc).
Extra: 6 - I'm aware Dartanian Nickelback is Dameon Clarke's Union name or something but it still saddens me seeing Dartanian Nickelback instead of Dameon Clarke on the credits' list in Kai's ED.
Extra: 7 - FUNimation for some reason added "MR. SATAN (HERCULE)" to the credits' list as if the fans don't know Satan's real/stage name.
Extra: 8 - Super Vegeta in Kai with the new animated scenes had grey hair which was cool but sort of unfitting also, his hair is yellow not grey.

Note 1: I don't hate Kai, I actually like it a lot but there was space for improvement.
Note 2: I just did this for fun and didn't take much time since I've made notes while watching it.
Note 3: Feel free to correct me if I'm wrong. Thanks.








