Fix Upstream Signal -to- Noise Ratio's!
Former cable guy / comcast NOC tech here
If the company would allow more time for quality work; then the upstream signal would be "clean" enough for most users anyway. (how often does Video on demand, or voice phone calls, or web page loading seem to lag? well, if the signal were consistently clean enough to actually make it out of the home; then we would all be better off)
[& don't jump in here & blame bad neighbor wiring; I have personally ensured that the houses around me are clean. the only thing left is the mainline. give those mainline techs the time they need already!]