There was a way with my old boxes to revert back to Classic mode and it brought up a half dozen more channels. This is a RIDICULOUS waste of real estate if there isn't a way to do it.
I don't recall there ever being that option. Are you sure you were with Rogers at that time lol? But yes the guide is terrible, Rogers has a tablet app that allows you to browse the IPG, and the tablet app shows about 7 channels at a time and up to 3 and a half hours in advance. Too bad Rogers/Cisco couldn't implement this into the TV guide.
I'm certain I was with Rogers. LOL What you had to do was something like hit Guide then Settings and that option became available. A lot of people complained about the older boxes until we figured out the Option.