>>283740416
>>283742922
They're not doing a Toriyama one shot/short manga collection.
For a start, most of the best ones already got adapted, those being Sand Land and Ackman. Beyong that, Kennosuke-sama and Pink already got adapted, and Wonder Island got folded into a couple of the Dr. Slump materials.
Beyond that, the only pretty good ones are Neko Majin, Jaco, and Cowa, and two of those are Dragon Ball works.

The other issue is just that most of them aren't good. The aforementioned Wonder Island ranked at the bottom of all the one shots it competed against for a reason.
If I had to rank them, only a couple would be worth adapting, and all of them would only be about five minutes long.
>ADAPTABLE
Cashman (one of the only ones that would really work)
Chobit (only significantly lengthy one, but it's multiple episodes, not one story)
Mad Matic
Dub & Peter 1
Pola & Roid
Tomato
The Dragon Ball prototypes (but you'd need to 'invent' endings for them, since they don't have endings)
Mr. Ho
>UNADAPTABLE
Little Mamejiro
The Elder (it's just a car chase)
Escape
Highlight Island
Wonder Island 1 & 2