Interestingly I have a relatively short but wide foot; I like Scarpas but find that I need to go up about 1.5 sizes to get a fit which works which is OK as I wear outer and liner socks and use special insoles for metatarsalgia. However, I got a pair of Salomon Quest prime GTX last year to try them out as they are lighter in weight; I only needed to go up 1 size as their standard insoles are fine and I don't have the same problems. I think it may be something to do with the metatarsalgia flaring up with stiffer boots but not sure.
To resolve some of the issues you're having, I've tried different lacing systems in the past. In order to allow a little more room at the toe end, I leave the laces a little looser lower down but then double twist at the ankle or use the gripping lugs which some boots have then tie the reminder tightly up the ankle. With the scarpas, I tend to go from third top lugs straight to top lugs then back down to second top lugs and then tie the laces; this way I can keep the laces tight so that the ankle is held tightly in place to stop the foot slipping forward but while still allowing space around the ball of foot / toe end to help ease problems with the bony bits below the toes and not squeeze the foot across the way - cheers
