Ever since the mid '50s, both of our airports had improvements in a staggered manner. (Over time.)
YQR'S expansion during '03-05 was based on [Transport Canada's] 1983 major expansion design and appearance. Back during the 'Transport Canada' days, airports were merely utilitarian-looking and functional. (As compared to now.) When Saskatoon's major expansion occurred starting in 2001, airports across Canada had already been [then recently] operating as their own respective airport authorities, allowing each airport authority to cultivate their facilities as they see fit.
Within the next few years, YQR terminal will be experiencing a major modernization programme as well.
Hopefully YXE will improve the groundside appearance in the near future. We must admit to the fact that The groundside to YQR is far more attractive because of copious number of trees and rolling grassy hills --- YXE still does not possess that, as-of-yet.
(Hopefully they will soon though as well.)