One major factor I feel is affecting bitcoin is global acceptance, not as general currency. But as a legal platform. Having world power countries settle with this would really make a difference for Bitcoin.
The factor of supply and demand of the coin in the market really can't be overlooked as it determines scarcity or abundance in the market.
Not really. Even before any major government accepted it,,, Bitcoin was already deemed by people like you and me as currency. This is what is most important. Unless you are a business that must be regulated, you can use BTC even if your country bans it. That is the beauty of a decentralized network under no control of any single person or power.