As a Lefty myself, I very much dislike your choice of words how this game was made, just forthe record! But it is very much the fact that SBG was ended prematurly to concentrate on Wifey´s Dilemma revisited.most likely yes, this was made with left hand with minimal efforts and left unfinished.
What is also true that WDR is undoubtely 3Diddly´s best game so far, he definitely learned from his earier games. Wifey´s Dilemma revisited has several distinct and different paths, from full romance over fun sharing/swinging and voyeurism to cuckolding, cheating and fullblown hard NTR.
Stats, traits, events, who you are friends with and where you work has direct influence on what events you may get (some events are just possible with a very specific combination of stats and traits), some events are locked off or enabled by other events only. It is also changable how strong your rivals for your wife´s affections are: from barely there harmless over a threat you can handle if you do not fuck up to extremly dangerous to claim your wife for themselves.