there is a consensus in hewiki "village-pump" page, known as "Miznon" or מזנון.
see here: https://he.wikipedia.org/wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94:%D7%9E%D7%96%D7%A0%D7%95%D7%9F#.D7.9C.D7.A4.D7.A0.D7.99_.D7.91.D7.A7.D7.A9.D7.94_.D7.91.D7.91.D7.92.D7.96.D7.99.D7.9C.D7.94
there are 8 "support" and no "object" votes, which in hewiki considered to be a consensus.
the essense of the request is:
"Hewiki asks to change the default display sizes of gallery and thumbnails. Gallery images should be sized, by default, 200x200, and thumbnails defualt width should change from 220 to 250"
T18739: Changing default image thumbnail size on Swedish Wikipedia
T49332: en.Wikivoyage: increase default image thumb size to 270 and change user prefs thumb size choices