Leathergraft: make a bass version of the comfy suede guitar strap. Instead of 2.5 inches make it 3.5 inches wide. Also add some other colours of suede to the range - I'd definitely order ones in cream and daphne blue.
I'm loving my waza air bass headphones - they are the best practice aid I've ever had. There's a new system update available but it seems unneccesarily fiddly to install. Has anyone done this successfully without bricking £300+ worth of kit?
https://www.boss.info/uk/support/by_product/waza-air_bass/updates_drivers/c97e9fa0-4cdd-40ca-8c91-f0607a2bbd22/
No The JMJ comes with 9050s which are long scale — they are designed for 34" scale basses so the wound part of the E string goes around the tuner post on mustangs. They work but are not elegant, and they have snot green silks. It just seems odd that Fender don't supply a 32" medium scale set when D'addario & LaBella sell medium scale stainless steel flats that fit perfectly but cost more than the Fenders.
Fender — make stainless steel .045 – .100 flatwounds like the 9050 set, but sized for a string-thru mustang bass. With Daphne blue or black silks please, and ensure the strings are all nice and smooth like LaBellas or Chromes.
All bass manufacturers: Roll the damn fingerboard edges - It makes any bass (or geetar) feel much better to play; its not difficult to do and doesn't take long, but often (i.e. on all maple necks) should be done before the finish is applied.