Interesting question...
One might start by asking what properties are compatible with the type of fairly rigidly structured storytelling that Ligan seems to prefer to utilise in their licensed games. Which, interestingly enough, seems to be rather different from how they structure the storytelling in their own properties, but that is probably a different question...
Looking at what they've done so far:
- Blade Runner — you play a Bladerunner, period, and you Investigate Case Files, period.
- Loop & Flood — you play a Kid, and you juggle solving weird tech-induced Mysteries with mundane life as an 80's school kid
- Väsen — you play a Sighted Society operative based in Castle Gyllencreutz in Upsala, and you travel around the country solving Mysteries around encounters with mythic creatures
- ALIEN — as far as I can see, the most "sandbox-y" of Ligan's licensed games to date. You play some kind of a space-based "working Joe". What you do ... well, pretty much up to you and your GM. Some of it will involve Aliens.
All of these game worlds obviously contain a much more diverse variety of possible character types and activities, but the scopes of the storytelling in most of these games has been narrowed down to cover a fairly specific "slice", where who your character can be and what he or she is going to be doing is fairly strictly defined from the outset.
Twilight: 2000 and
The One Ring are obviously also licensed — and complete sandboxes — but these being merely new editions of pre-existing titles where the scope of gameplay already has been defined by others, I believe they don't really count.
So ... what properties would fit into this kind of structured storytelling?
- James Bond — you play a British MI6 operative who undertakes missions to battle belligerent superpowers and supervillains around the world
- Indiana Jones — you play an Adventuring Archaeologist or Sidekick, and you travel the world hunting religious artefacts that turn out to have mystical powers
- The Matrix — you play a Nebuchadnezzar crewman (or other Zionite) who undertakes missions to bring the machine rule down
- Men in Black — you play an MiB who investigates weird alien immigrant cases
- Stranger Things — you play a Kid, and you juggle solving paranormal Mysteries with mundane life as an 80's school kid
- Space: 1999 — you play an Alpha citizen, and you try to ensure the base's survival in encounters with strange space phenomena and powerful aliens
- Mission Impossible (TV) — you play a Impossible Mission Force operative who solves missions of puzzle-like intricacy around the world
- Harry Potter — you play a Hogwarts student, and you solve mysteries to keep the dark forces at bay
I believe it comes down to that formula:
you play an X who does Y, with a fairly defined terrain or playground in some sense, episodic base structure, and the span of thematic variation from one "episode" to the next kept reasonably narrow.
And with somewhat well-defined values of X and Y.
If the gist of the franchise can be boiled down to that format, it should be a good fit for Ligan.
Ghostbusters should thus be good, while "sandbox worlds" like Conan, Cthulhu, Star Wars, The Witcher, The Expanse, Dune etc — where a character can be
anyone and find him or herself doing pretty much
anything — may not be the best fit. Apart from that they all already have licensed TTRPGs, of course.
Looking beyond popular screen entertainment:
- Hornblower — you play a junior Royal Navy officer or a senior rating in the time around the French Revolution and the Napoleonic Wars, and you have adventures around historical events and characters
- Watership Down — you play a rabbit who has left his warren, and you try to carve out a niche for your group in encounters with a hostile world and culture clashes with strange rabbit societies
- Hammer's Slammers — you play a member of a Slammers Advance Recon team, and you travel around the galaxy scouting potential employers and missions
- Twenty Thousand Leagues Under the Sea — you play a "guest" or crew member onboard the Nautilus, and you travel the world undertaking covert missions to advance science, help the oppressed, and right injustices ... while juggling having working under a boss whose grip on sanity is precarious at best ... in a world based on the 19th century's worldview.