Acrylic rulers changed the way we cut fabrics also.You may want to add the rulers in too. They appeared just about but a litte later than the rotary cutter. The common use of FMQ may be another technique that became very popular; Pre-cut 10" squares also came out near the time of jelly rolls. Another thing is disappearing ink pens for marking a quilt. That is relatively new. Another thing is basting with Elmer's Washable School Glue.
Your list is very nice and the history is developing great!