Braided lines on older bikes? Definitely! Over 20 years ago I put Russell braided lines on the front of my Suzuki. Changed the fluid to silicone at the same time, and have never changed it since it's still clear. Brought the brakes from scary to above marginal. Ferodo pads also helped. I don't think that newer bikes need braided lines, but they look nice.
Got the stainless steel braided and new synthetic brake fluid on my 9R. They're nice and once you get use to them, they don't seem to touchy. The touchy factor is what takes some time to get use to. There is no give in the brake lever. IT'S ALL BRAKE!! Not sure if I'll do it again or not. Just doesn't seem to be much need for it on the street.....
Re: braided lines. Before changing lines, I would change brake pads to one of the HH pads from EBC or DP. I have DP pads on my CBR and love them.
Re: silicone brake fluid. I'm the original owner of my GS 1000 and back then changing the lines, pads and fluid was almost required. Silicone brake fluid doesn't absorb water and won't ruin paint. Water in brake lines is what ruins most calipers. Harley's use silicone as do the custom bike makers. That's the purple fluid the American Chopper boys put in. They made it purple colored so you won't accidently add regular brake fluid to it. They don't mix and the old brake fluid has to be completely flushed out before changing to silicone. I use regular DOT 5.1 in my Honda, and for newer bikes that get the fluid changed often, it would be good enough.