Hi @rafaeljvieira, thank you for your response...
"Furthermore, Opera's Speed Dial supports folders and that could be a problem. I mean, if your 7th item in Speed Dial is a folder and you press CTRL+7, how should Opera behave?" Easy, CTRL+7 to go into that folder, and the user has to CTRL+X again to select the item within that folder. It would behave exactly as if the user is mouse-clicking the item/folder on Speed-dial except that the keyboard is used instead.
I went through the features link you provided, but I don't think the speed-dial hotkey issue is listed. Can I request this as a feature to be added somewhere?
Thanks @starthq, I added my voice in your link