Home Alone really didn't need any films beyond the first one. Not that the second one wasn't a good film in its own right. But like I said a hundred times, comedy sequels rarely work. It's usually the same story in a different setting on a grander scale with a larger budget. Like I said before, 22 Jump Street and Hangover 2 were written specifically to say "the studio made us do this, we find it unnecessary, so we'll just make subtle nods to how unnecessary it is." The second option of using the same title for different characters in a similar but dissimilar situation is also a gamble. Never really saw HA3, though so I can't judge.