There was another topic regarding lightdm
But i think you have a different point of view: maybe to change the title of the post into something like "less gnome applications included in Mint Xfce? "
ps: i agree with you, for "xfce -ish"
and practical reasons but the direction is to select mainstream application, more well-known to most of the users
Sid Mint Xfce -32, Openbox, KDE, Enlightenment, Liquorix Kernel
HP Compaq Presario cq71, Intel Core 2 Duo T4400 @ 2.2 GHz, 3 GB DDR2 RAM, Nvidia Geforce G 103M