YAWAS (yet another wad author suggestion)

I was thinking, How about a key that will flip a linedef (instead of having to go into the propertys.) also impliment a easier way to tag a linedef to a sector.

I quite liked the WadEd way of tagging, by clicking RMB in a sector. If there were a way to get a similarly simple way...

Yep, I love the beatifully simple logic of WadEd.