The game as a whole would be better in renpy. Renpy is superior for this game type than what he chose. Devs that use other offbeat engines that don't allow gallery/scene viewers, cheats, etc as easily perplex me. Stuff like that should be in a game from day one imo. Don't get me started on having to have an entire group of people who make "mods" to put things in games that should already be in every game from day one.
And I fail to see why "cheating" in a game is a negative. Games are for fun and enjoyment, not some rule following ego trip.