Mecha Frieza is badass in KAI. The part where Future Trunks shows up has always been one of my favorite scenes.
Oh and about the blood color, I was mistaken. They don't show reddish blood on nicktoons for sure, but on the uncensored version they do change it a little. It looks a little orangish so its not exactly blood red. But you can barely tell. I was confused 'cause on certain parts they did change the color of the blood do make the effect more realistic. Like when someone gets blasted in the face originally they had a bloody face, but in KAI some of the blood was changed to black to make it look scorched.
Still I can't stress how much better the dialouge is. Just the other day I watched an episode of KAI and then went and watched the original scene on youtube. It was the scene where Piccolo beats Android 20 and Trunks shows up. For one thing the voices in the original version were horrible. Over the years Chris Sabat has gotten SOOO much better at doing the Vegeta and Piccolo voices. He has them perfected by now and thats what you hear in KAI. Second the lines have been completely rewritten and not only do they make a lot more sense, they are nowhere near as cheesy as the lines in the original version. Like when Vegeta is realizing Trunks is his son from the future. After seeing the scene in KAI, his lines in the original version make him sound like a moron.
Really, I knew KAI was better in these respects but I didn't realise how much better until I watched corresponding scenes back to back. I reccommend you do that next time you see an episode of KAI on nicktoons.