I understand what you're getting at. Redstone automatically connects to any other redstone next to it, whereas the torch will not - allowing the possibility of independant control of two netherrack which are beside each other and on the same level. It may be possible to use stepping to accomplish this, depending on your scenario.
This may seem like a small change in relation to your specific issue, but it entails many other ramifications. I suggest that we do not modify redstone torches to light netherrack, as it will affect completed structures which use redstone torches under netherrack as a means of routing or power (essentially, if this change is made then any existing r.torches under netherrack will result in ignition).
A note on a different alteration topic: I am a huge fan of redstone controlled jukeboxes which could solve the stolen records issue.
This may seem like a small change in relation to your specific issue, but it entails many other ramifications. I suggest that we do not modify redstone torches to light netherrack, as it will affect completed structures which use redstone torches under netherrack as a means of routing or power (essentially, if this change is made then any existing r.torches under netherrack will result in ignition).
A note on a different alteration topic: I am a huge fan of redstone controlled jukeboxes which could solve the stolen records issue.