Tony hooked up with Betty.
Kind of implied in the latter part of the game and would be a nice way to show Tony's Character Development.
After the ending, Kyle kept living in his car.
The epilogue of the novel shows him, a month after everything's over, going to sleep in his car in the middle of the afternoon. He's either slacking off once again (in which case Ed isn't gonna be happy) or is having trouble finding a new home.
Just a funny thought I had after seeing Chapter 7, where Kyle eats a whole chicken in one sitting. Detective Jowd is known to be a huge fan of chicken. Also, earlier in Chapter 7, he mentions sometimes seeing a black cat in the park when talking to Mila. In addition, both Kyle and Detective Jowd are former police detectives who are shown to be disillusioned due to circumstances: Kyle due to the entire affair with Bradley, and Jowd due to the Manipulator Incident resulting in his wife's death and his imprisonment.
- So maybe Hotel Dusk and Last Window take place in a universe where Yomiel was never struck by the Temsik Meteorite. Cabanela and Jowd's real names are Brian Bradley and Kyle Hyde. Maybe Cabanela and Jowd are code names/radio callsigns, like Black Widow and Hawkeye from the Avengers. The two of them continued being friends/partners on the force, until one day Cabanela/Bradley was slated to go undercover to infiltrate Nile, and the rest is history. Because of Cabanela/Bradley turning traitor, Jowd/Kyle becomes obsessed with finding him and never meets/marries Alma. The reason Jowd/Kyle sees that black cat (Sissel) in the park is because it was never taken in by Yomiel and thus remained a stray.