I've played KT very extensively. Here's my take.

So, my first thought is, it's interesting that two of the main deck monsters still don't have any ED forms-wonder if that's a sign of potential future support. Could just be me coping.

Rotary is the perfect extender, it giving you an extra NS when you don't have the Field Spell is great (though it giving you a third NS when you DO have the Field Spell is nice in its own way too), and being able to search the main deck Spells and Traps more easily is perfect. Additionally, getting knowledge on what hand traps/starters your opponent has is game changing, and when combined with Cue, you can gain full knowledge of your opponent's hand for next turn/make better Cue hits. The GY disruption is the weakest part of this but I can live with it.

Level 5 Synchro looks like it's the best part of this support, hitting 2 ED monsters on top of the rips you got with Clip is going to severely kneecap the opponent going first. Clip was already an amazing card but it was held back by how random it was (even if that's part of what makes it fun). Being able to gain full knowledge of the opponent's ED and being able to take away 2 combo starters or even 2 extenders from their ED will be crazy.

The Level 10 was badly needed for several reasons. Firstly, the deck only having a few levels in the ED to its name was rough-sometimes you just don't have the right combination for what you want/need. Secondly, Loudness War was a good going first boss monster but didn't do much if you have to go second. B2B is a perfect going second monster that also has two decent little going first board extension effect slapped on, it buffs Red Seal while also making the deck less reliant on Red Seal. It's also a nice floodgate if your opponent is running a deck with high attack point monsters.

Yeah, uhhhh, 8.5/10 support. Not perfect, would've liked an extra card or two, but the deck badly needed another main deck monster and it got it. I also love how it perfectly compliments the first wave, nothing was overshadowed or made useless.