Just an update with some more details:

Tried extending the Displayable model to create a lower level custom model 
with one ImageField and three CharFields, and registering with 
DisplayableAdmin, but behavior wasn't as expected -- the model appeared 
with the custom name, but the fields were the same as the existing BlogPost 
model. I also just discovered this gist 
<https://gist.github.com/kenbolton/5885243> for creating a custom page 
admin to register the model, would this be frowned upon?

On Monday, June 26, 2017 at 11:57:55 PM UTC-7, [email protected] wrote:
>
> Hi, I have a few custom models that are built off of the Page model and 
> manager, and work great. But there is one model where it would be useful 
> for an inherited field (Show in Navigation booleans) to either set to 
> editable=false or remove them entirely. Is this possible?
>
> I'm worried that the fact the default states are all True and the extra 
> interaction required will effect the experience. I have read many posts on 
> the mailing list, stack overflow, and the git issues usually suggesting 
> that this is not a good idea and can cause unforeseen breakage, but the 
> Show in Nav bools seem pretty innocuous. I was thinking maybe finding a way 
> to hack some javascript into the admin to check the url and hide the fields 
> conditionally, but there must be a better way. If you have any ideas, I'm 
> open to anything! Thanks for a great tool!
>

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