I was very disappointed when I found out that the "Mega Pack" didn't include this, as the "cartoon" sequel is the one version of the game that I clearly recall playing. What's the chances of seeing this title added in the future?

You can wish for the title here:
http://www.gog.com/en/wanted

So people can vote it too and maybe someday we will get it. Just don´t forget to search first the correct title name and create it only if it didn´t exist previously.

I voted also for this game, I would buy this bundle with this game in it. But the democratic system on GOG is really awesome.