From a business standpoint Stern wants to chase the 80's.. Maybe sticking with another movie to produce the same GenX / 40 -50 year old guy childhood memory sweet spot that GB hit..
It has to be in the top 10, really the top 5 movies in box office gross for the year it was released, otherwise it doesn't stand a chance.
Gremlins. The box office wasn't as big as GB but its pretty beloved. High chance it will be remade or rebooted or whatever.
Why not focus on everyone's favorite Star Wars? Empire Strikes Back.. A Safe business bet. Lots of Star Wars action for the immediate future.
Hoth-Luke-Han Themed Pro / Imperial-Vader Themed Premium and Dagoba-Yoda themed LE... With force leveltation (super cooled magnets)
Top Gun.. Its a movie, its a jet, its great Kenny Loggins music.. Its the pin that F-14 Tomcat wanted to be but for real. Great at the box office and a classic that every guy in his 40's and 50's has seen many, many times. Tommy Cruise is still a huge deal overseas and this would move fast in Europe. Tons of great catchphrases and DMD modes/LCD modes.
Who Framed Roger Rabbit.
Other than possibly being a licensing nightmare. It did a significantly higher gross overseas than it did in the US.