Some thoughts on KD dances.
The dances are mostly going to have to be reworked (assuming there are no new dances).
I doubt they will be able to use the music from Strictly, so will have to work with an edited version of the songs.
The stages at the 3 venues will be different sizes and shapes to the Strictly stage. They are also performing totally for a live audience in front of them.
There are a few dances that will not require so much space and a few that will require a lot of reworking. The Paso is one I would have thought would require a lot of space or be reworked, but it is the one dance they have declared so far - which may mean my ramblings are rubbish!

I think Aliona would prefer to rework dances she is expert at, so I would expect the AT, Charleston and Salsa to stay much the same if used.
If Aliona does have to rework them to fit, then I think it makes it a bit more likely that she might tweak or improve dances.
The CCC is a dance Aliona can do a lot with, and Jay could learn to do a totally different CCC using many of the steps he already knows - using different music.
The Waltz is already so good that it just has to fit the stage. A strong possibility.
The Jive is compact and the music is readily available. Will they want to do it again, or feel they need to?
The Quickstep would take too much work and still would struggle to impress - besides the music would need to change.
The Paso Doble just needs to fit the stage.
I can imagine a much sexier American Smooth to the Amanda Seyfried version of the song, but the time issue with makeup may eliminate the AS as a dance.
I don't think they will do the AT, as I think Jay's part needs increased.
The Foxtrot is another strong possibility. It has a strong song, not a lot in hold and what we saw of the missing ending looked very good. It may be between it and the Waltz for the gentle romantic mood setting.
The Salsa is easy to repeat and is a strong possibility - and it gets a lot of views on YT. Aliona is experienced enough in Salsa to add more difficulty and reduce the spins at the end.
The Tango is a great dance and just needs to fit the stage. Another strong possibility.
Rumba. Easy choice - like the Jive, but I think they may want to show their versatility.
VW - a lot of passionate wafting, but not a strong song, so I don't think it's a contender.
Charleston - Very impressive and fun. Maybe between it and the Salsa as the fun dance?
I don't think they would do the Showdance, as it was a dance for that particular occasion.
My guesses would be Waltz, Charleston, Tango, Paso Doble.