Translatable connector start/end

Currently, I'm by-passing the connectors related convex
hull issue by generating connectors as a path with
desired end points and appropriate
inkscape:connection-* and inkscape:connector-type
attributes. When I open such file in Inkscape,
everything is OK until a connected object is moved.

Then, as expected and as given by the convex hull
issue, all connectors connected to that object get
trimmed on both ends by respective bounding boxes of
objects those connectors are connected to.

So, it would be nice if there was a way to specify a
connector end to be fixed to an object it is connected
to. It should, of course, translate/transform along
with that object. This way, no convex hull nor bounding
box intersection computation would be necessary.

More:

Q1: What are allowed values for inkscape:connector-type
attribute? Is there an alternative to "polyline" value?
And is there an alternative element to path to be used
as a connector, e.g. a line? Doesn't seem to work..

Q2: Just curious, how will you do a convex hull to a
text object, either as a target alone or as a part of a
group?

Thanks.
/charlie/