yes and no in my opinion. if properly done the human eye will notice no difference from normal viewing distances besides try to see the big picture and think, lets say ... , of the energy savings for instance. Rather than having 2 high power transmitters consuming a lot of several resources (including human ones) for lets say an NBC affiliate and their Universal Sports channel I would rather have only one with 2 TV channels. But well , like they say in Spanish, Para gustos se hicieron los colores y para escojer las flores so there will always be someone who likes a different color than one's choice.

I do not see any canadian OTA channel having a subchannel in the future either, lets face it , we are acctually loosing local TV stations across the country and being right next to the super media power the USA is, does not help either. On the contrary , it is the equivalent of trying to make a living out of lumber in the US when Canada produces lots of it and way cheaper.