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Date: Sat, 18 Mar 2017 19:03:40 +0100
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Subject: Re: [geda-user] [pcb-rnd] tEDAx footprint load support (and a
 little bit furter)
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> > Blind and buried vias are an interesteing topic, but to me not
> > relevant to footprint support - what do others think?
> 
> ...
> 
> When in doubt, I'd rather not restrict what can go into a footprint.

I agree.

> If footprints could contain anything a complete layout can it would be
> possible to build and use ready to use layout blocks. Footprints could
> contain footprints, very much like symbols can contain symbols in gschem.

It would be very useful and consistent if footprints could contain anything a complete layout

A library of pins which may be used in footprints is very useful. It is common with a special pin 1 while the others are same and most footprints come in different size.

An inclusion mechanism is very useful because then layout could be built like this: pin --> footprint --> layout. Same primitives in all, structure is just a method to make them simpler to handle for the user. For visulization or other output structure is not important only layer although it may be useful to filter for both selection and visibility.