1.HALVING: it's a period where investors,earners and miners of Bitcoin get their rewards for mining being shared or cut into halves.and this procesd takes place during every four years, so when this is done the market prices for Bitcoin rises and reduce inflation.
I'm pretty sure that halving is the only indicator that can accelerate the bull market. In fact almost every time bull market starts after halving and it gets intense after few month to a year of halving. I believe that this factor plays the most important role in bull market.
2.EDUCATION: Education is versatile "if your not informed you are deformed".
Saw a video of miss bitcoin,educating her kids on bitcoin .so enlightenment and educating on bitcoin will lead to the adoption of utility.
Education about Bitcoin is necessary but it doesn't play any role in boosting up the bull market. With proper education about Bitcoin one can protect his/her Bitcoin from hackers and can invest in it securely.
7.INSTITUTIONAL ADOPTION: Seeing top financial boys like Blackrock,Finetech and fidelity in bitcoin will sure lead to investors keeping billions of dollars aside to invest in Bitcoin.
Also ETF from financial goals like Blackrock,fidelity and others is definitely a good thing for bitcoin adoption that could lead to increase in price. Which is a good thing for those accumulating these Satoshi's for years now.
Yes, those type of ETF's from the top companies may increase the adoption of Bitcoin and we may see new investors in the world of Bitcoin due to those companies. But, still the top investors will only invest in Bitcoin if they like the idea of decentralization and other features of Bitcoin.