Setting filter option defaults via Special:Preferences
should be possible for each of
Recent changes, New pages, Watchlist, and Rechent changes Linked
individually, and with an identical selection of choices, and
with most similar wordings.
See also bug 7039, bug 16957, bug 16969 .
It would likely be useful to employ a common set of
subroutines to the widest extent possible, and
to have an own tab for each of them in Special:Preferences