I love tying my own rigs, the attention to detail of getting it just right, the little adjustments you make to length and pop-up height for instance - it's all using the grey matter.
I will always remember sitting in my bivvy all day trying to work out why my non tangle rigs were suddenly tangling every cast, chucking fast and low under pylons, did my head in completely. That day I came up with huge loops over half the length of the boom effectively lengthening the anti tangle sleeves properties if you like, and giving you a set place to mould the rig putty stopping that ever slipping. By the end of that day I'd come up with better anti tangle properties and more importantly realised that if I tied the hook end section almost in reverse order I had total control of how much stripped braid was left exposed, instead of ending up with whatever you got after tightening the knot. So I tie the hair last if that makes any sense at all - hard to put in words. So one problem ended up improving all elements of the rig I'd been tying for years and years.
I thought about tying rigs many years ago for those who struggled to do it themselves, like a complete custom set-up, was a good idea, couldn't be arsed in the end lol same as all my other great ideas 🙃🤣