1. Cross-lingual studies of grammatical relations,
information structure, constructions in a very broad sense, argument
realization, grammaticalization, etc. leading to theoretical insight
into the nature of these things.
2. Treebanks
and parsers that can be used for corpus-based studies in linguistics,
and perhaps in some hybrid third-wave neuro-symbolic systems in
language technologies, especially in low-resource languages.
3. A challenge to UD (universal dependency) and UMR (uniform meaning
representation): I think we can learn from UD and UMR how to do things
on a larger scale. But at the same time, we can save them from their
fate as stone soup in the following sense: they thought they could do
something easy (make soup using only "stones" and water, which consisted
of three pages of definitions of grammatical relations), but as they
progressed, they needed to keep adding "carrots", "onions", "bones"
(serious linguistic decisions). But unlike the story, where the soup
turned out good, UD has turned out messy and too big to fail. Sometimes
they talk about possibly not going on to Version 3 because Version 2 is
too big to change. We can show how to do a UD-like project on a firm
foundation.
I am personally interested in (1) and (2), and interested as an observer in (3).
Joan