And risk losing Apple's CIP input.
Unfortunately, the Apple requirement for technology transfer into CIP has expired and sometime in 2016. Someone else please provide the exact date, thanks.
As far as BMG's being in use, check out the history of patents
Top BMG Patent Holders from '87 to '03
55 patents – YKK Corp.
43 patents – Honeywell
33 patents – Tsuyoshi Masumoto & Unitika Ltd.
26 patents – Akihisa Inoue
15 patents – Alps Electric Co.
14 patents – Koji Hashimoto
13 patents – California Institute of Technology
13 patents – Nippon Steel Corp.
11 patents – Hitachi Ltd.
11 patents – Kabushiki Kaisha Toshiba
The largest revenue maker, big time, has been Hitchi who bought all of Allieds (now defunct) patents
So yes, have to agree with you that BMGS have been in use a very long time.