First of all, atera - sensei's work on the new game still hasn't started as his main job now is to sell his next cg collection, but so far the work is still not finished, but I predict that it will be released next year for sure as the progress is nearing completion.
Then we are not able to use his cg's other than the game because those are paid items that he uses to provide benefits to sponsored fans, something that has also been clearly replied to.
The only sad thing is that the original version of this game will probably stop updating permanently, as it is a free-to-play game from which no revenue can be made, but at least we got to know him through this game and have more to look forward to. Now, let's see how much more new content we can add in the remake able.
Lastly, his experience with the game I believe is excellent, knowing that he is putting together 100+ cg's into a smooth "animation" is proof of unquestionable excellence, and the reason why he's progressing very slowly is because he needs to be rewarded every month to make an income, otherwise he can't live.
That's about it, I apologize if it's hard for you to read since I'm using a translator, but I can give you an interesting news, that is that there will probably be 2 Leahs in his new game (Leah in the game is not the same person as Leah in the cg's) and Leah's sidekick will be appearing in the future games too.
Thanks for reading.