Fill

So I am a player who is comfortable playing any role except ADC. This isn't because I can't farm or win lane on an ADC, but because I do not have the positioning or mechanical skill to do well on ADC in teamfights. As someone who mains Support when going into ranked I would choose Support/Fill Now about 80% of the time I would get Support. However almost every time I didn't get support I would be stuck on ADC. It is at the point where now I pick Support/whatever other role I feel like playing most.

Now the Fill option is basically saying "Hey, give me whatever role is still open" The only time your 2nd option comes into play is if lets say there are 3 people who wants Top Mid and ADC. Then there are 2 people who selected Fill. If one of them had their other option as Support or JG then there is an impact. However this is very rare and doesn't actually mean a lot. So my idea was that if you selected Fill you could pick 1-2 other roles that you DON'T want to play. This would allow people to fill for 3-5 roles and not get stuck on just picking between 2 roles because they don't want to risk getting stuck on the role they are really bad at.

What is your opinion on this change to the Fill option?