A big release of recut plastics - for example, i'd love two sprues per Uruk-Hai set, which is 1 unit of 8 pikes and 8 sword/shields or perhaps some Mordor Orcs with 8 bows, 8 sword/shield, and 8 2h weapons
Next, however, i'd do a large release of units:
- Rohan Royal Guard
- Helmingas
- Hobbit Militia
- Council of Wizardry
- Swan Knights
- Warriors of the Last Alliance Recuts
- Riders of the Dead
- King's Champion
- Gundabads
- Stone Giant (could even use the old metal Giant! Free mold!)
- Isengard Recuts
- Mordor Recuts
- Kataphrakts
- Ringwraith in plastic! lulz
- Ghostly Legion conversion kit
- Ghost Riders
While I would really like recuts, I doubt we will see them in anytime. The release of the Galadhrim with the same kind of mixed box (they would have been the time to start doing better designed boxes) tells me that GW wants to stick with the current box philosophy.
I am OK with metal heroes as well, I just really wish they would put the core or very important units for some armies in plastic.
Beorings and/or Black Numenorians...either would make me very pleased.
Plastic Fell Beast...
Oh, wait, it's coming out.