The main things are placeable objects that give light just like the TOV candle, but in the standard primary colors (Blue, Green, Purple)
I want NPCs of more characters, including NPC factions. Especially Robots like the Malta, Council and MM ones. Lusca? Seagulls Flying?
I'd want an AE access portal to edit (Launcher could be cool, but its probably impossible)
Round versions of the various 'floors' we have. A plain black floor tile (Think substation flooring, but solid black and another of Solid White (Maybe tintable?)). I'd want the different Fountain water shapes without the fountain part. (ie: round water tiles) And more types of surface textures (dirt, sand, concrete, street, etc)
I'd love to see some more of the Pocket D items like the neon beams, etc. Graffiti
Entire buildings from different zones. That would reduce item counts for a lot of those scenery bases. Even if they have to be pieces.
An object/sign that, rather than placing individual Letters, lets you write something, and it just displays it. (like an SG name or something.)
An option to Toggle the Grid outside the base visible or not. And, an option to just turn the entire base into one big room so there are no 'gaps' and 'doorway' shenanigans.
Placeable objects that serve the purpose of the NPC tailors (say a Mirror? or a Closet?)
More types of doors. Like ones that fit in the corridor bulkheads and so forth.
A big setpiece item that is like the arachnos pipe, but you can see the inside of it too for tunnels and such.
The ice/snow from Frostfire/Pocket D chalet.
Thank you for listening to my Ted Talk