I know HT will wanna produce loads for this line, but here are my thotghts on possible figures.
Mime Joker - Quite different and thus likely
Museum Joker - Very similar outifit, likely later down the line (DX.02?)
Jack Napier - unlikely, as may not be a big seller
Agreed - the first is quite likely, the second a bit less so - but the unique headsculpt makes it interesting. A Jack Napier figure is quite unlikely, but it wouldn't shock me if we get a "flesh-tone" Joker head at some point.
Ripped Cowl Batman (returns) - Likely for a re-release of this batman with Keaton HS
The suit is different in Batman Returns. If they get the license, we'll probably get a Batman Returns suit with either a Wayne head (normal head) or a ripped cowl Wayne head.
Or if they release a standard Batman Returns suit, they might do a limited exclusive (like the Toy Fair exclusive) later on with just the ripped cowl Wayne head.
Bruce Wayne - Un-likely for same reasons of Napier, possible Exclusive
If they didn't do a Bale Wayne figure, I doubt they'd do a Keaton Wayne figure.
Batman Gliding (returns) Un-likely unless done as a limited articulation set (like the LightCycle/Gantry)
For this, all you really need is another cape. I could see it as being part of a DX Batman Returns figure (like the DX02 had the backpack cape).
Maybe a Batman Returns figure would be a DX with the standard Batman Returns suit and this cape attachment (and possibly a Wayne head, though unlikely). And then a later Toy Fair Exclusive could use the same suit, but just have a ripped cowl Wayne head (so no PERS and faceplates and thus no DX).
If they have the Licensing:
Catwoman - Definite
Penguin - Possible, however un-likely due to non standard TT
If they can do one, I can't see them not doing both. The Penguin is visually very interesting, and that's a big factor in which figures they choose to do.
