Default Values

Wondering about support for default values? Say I type in

<foo |
I see attribute baz.
Now if I select off list I see:
<foo baz=""
If I ctrl-space, I get list of say:
baz-val-1
baz-val-2

If I could mark "baz-val-1" as the default, I would want
<foo |
and selecting "baz" from the list of attributes, now I would get this
<foo baz="baz-val-1"
ie, instead of just "", I would get "defaultvalue" selected..

Also, if I just type:
< foo baz=
then the drop would change from
baz-val-1
baz-val-2
to
baz-val-1 - default
baz-val-2

If no default flag was indicated in the json, then the original behaviour would continue.