I wish they would've made a sequel too...and by 1998 Mason Gamble was either kinda too old (or maybe not interested?) in playing a 10 year old Dennis, so it became a totally different movie.
Even though this movie has tons of parallels with Home Alone, the difference is that Dennis beating the sh*t out of Switchblade Sam was on total accident! He didn't even realize he was a bad guy until way later on anyway, and Dennis seemed too innocent and little to really intentionally try to hurt anyone anyway. Kevin was 8 and knew Herry and Marv were bad news.
And I wondered about Mr. Wilson too! My guess is that he DID get pissed about the flaming marshmallow and asked Alice to take him to work after all (or maybe she just offered?)...but for the most part I'm sure he mellowed out towards Dennis and knew he was a good kid.