I rather hope that the PPL FI will once again become the norm. There are loads of great guys out there in the GA community, with plenty of decent experience just waiting to be passed on. A lot of these people don't want the hassle of having to get a CPL and FI, when the CPL really won't add anything to their experience. It will hopefully lead to people being taught to fly an SEP properly, rather than the watered down airline SOPs most people teach at the moment.
However, for people who want to go from no flying experience, or low hours PPL, to instructor, there really won't be much difference in cost. You still at least need CPL groundschool, and then you would need to build an extra 50 hours to be eligable for the FI course, so you may as well just bag the CPL in the first place leaving options open for parachute dropping, aerial photography, or anything else that might come your way further down the line.