I haven't played any of these narrative focused games like Fate but would like to. My players are very used to other more hands-on type of game where the numbers are plainly what your character is.
Now I would like to give Fate a try and Strands of Fate seems interesting to me. One of the problems I'm foreseeing (probably unfounded) is the scale of abilities, especially for low power levels. So a rating of 2 is average while 3 is almost at the limit of normal humans. So I figured that 3-4 would rather be average and 6 would be a high level normal human.
So doubling the scale would require some extensive but perhaps not complicated rules change. It would also allow some balancing if needed. Aspect would give a +4 but you could actually go as far as saying the specialty aspects (and some others) only give +3 if you wan't to rate them differently, perhaps Specialty aspects only give +4 on their ability but +3 if you are able to invoke them on others. You could also go as far as to give always a +1 for aspects if you don't spend a fate point (big strong guy is still strong even when it isn't important enough to spend Fate points on it).
This would also give a bit of a leeway on stunts or advantages (whatever you call them) so when a power feels a little bit to powerful as a +2 but lacking as a +1 in the extended scale you could give it +3, in between the others.
Now the biggest problem here is the dice. What would you do there. Throwing 8 Fudge die is a bit crazy in my opinion so a new die (I call it Grudge) with (+2, +1, 0, 0, -1, -2) would be close but that's a custom die. 4d6-14 or 2d6-2d6 is a doubling of the extreme method.
Here are some methods that I thought about: AnyDice
Now another problem is that I don't know if it's doable. Stress and other mechanics that I would need to think through.
What are the pitfalls and why can / can't I do this?