As far as I know, there are 4 important things to do when creating a game:
scenario
coding
rendering
translation
Logo does three of these on its own and gets help for translation.
As you said, if he writes the script himself and hires someone for coding and rendering, how much would this person cost?
Tens of thousands of people around the world play this game created by Logo, but only 245 people support it
I think Logo does a very good job. What will speed things up is not your advice, but your support.