The movie seemed like a vehicle for James to do practical effects. It seems like that is what he values most in filmmaking above all else (his taste and comments about movies shows that), so he didn't bother with other aspects. The script is terrible, the characters suck, and overall its just a mess. Even with the movie being written to contain these effects setpieces, most of the time they're pretty bad even for B-Movie standards. So I couldn't even recommend it based on "well you get to see cool practical effects" because you don't.
If I were to improve it, >>95888783
had the best idea. If it was a more down to Earth, simple character comedy about a nerdy video game enthusiast interacting with the real world, it could have been good. But James didn't want that because he wanted to have a bad Godzilla monster in it.
In terms of overall tone, James essentially saw it as a type of hokey, "Deep down, love, the Nerd's love for his fans triumphs over all." Now, that is a cute prospect, but it fails to connect to what fans of AVGN want. They want more immediate, stoner-tier adult humor, not something cute like an adventure film. AVGN more like Clerks, not AVGN in the spirit of ET. James probably thinks that his audience is full of kids who laugh at toilet humor and swearing so he decided to kidify his film and make it a "feel-good" experience, making something that was a little more grounded and cleverer than that which would work better for a smaller budget and a different audience probably never even crossed his mind as he saw it as an opportunity to just shove a bunch of pointless special effects together.