look to this old video game, made with real actors filmed in greenkey and added in a cgi backdrop, i mean making games like that can be really great.
i dont think only 2d games can be done with construct, but bigger project also, for the web or dvd support.
here its my list of games made with videos, look to thoses sucessfull games.
Zork Grand Inquisitor: youtube.com/watch
Zork Nemesis: youtube.com/watch
Return to zork: youtube.com/watch
Phantasmagoria: youtube.com/watch
Phantasmagoria2: youtube.com/watch
The x Files: youtube.com/watch
The 7th Guest: youtube.com/watch
Myst: youtube.com/watch
Myst2: youtube.com/watch
Myst3: youtube.com/watch
Myst4: youtube.com/watch
Myst5: youtube.com/watch
Riven: youtube.com/watch
Toonstruck: youtube.com/watch
Gabriel Knight's 2 - The Beast within': youtube.com/watch
Ripper: youtube.com/watch
Police Quest4: youtube.com/watch
Darkseed: youtube.com/watch
Darkseed2: youtube.com/watch
Realms of the Haunting: youtube.com/watch
Conspiracies: youtube.com/watch
Conspiracies2: youtube.com/watch
Betrayal at Krondor: youtube.com/watch
Spycraft: youtube.com/watch
Gothos: youtube.com/watch
Shivers: youtube.com/watch
Shivers2: youtube.com/watch