Like I said above, in the past three years of regularly participating in various online discussions for OTT live TV services (mainly PS Vue and YTTV), not once did I ever hear someone say, "Gee, I really wish this service had a super slo-mo, single-frame advance feature for its DVR." Fast-forwarding is the main thing people want, to skip commercials. PIP is great and I hear that come up, but it isn't a DVR feature per se. (PS Vue has a form of PIP called multi-view, BTW.)