First of all, threaten to leave cable before actually leaving cable and see what they will do for you. I have U-Verse and get $300 worth of services in my bundle for under $200/month because i keep getting promo rates every time I threaten to leave. I get every English speaking channel, which is pretty cool if also a giant time waster. I would cut my home phone but I need a landline fairly often for work calls.
I am actually on the fence on Netflix. I have watched Mad Men and Breaking Bad, and I am not sure what else is left. I like House of Cards and will occasionally watch a rerun of West Wing, but I don't know that I would pay for West Wing and House of Cards isn't worth $100 a year by itself.
ATT U-Verse enables me to watch streaming videos of all the major channels, so I can watch old Sopranos, Entourage and Shameless episodes any time I want. I watch those more often than I watch West Wing. I hope Frontier maintains that feature.
You also need cable to watch sports.