This is a very broad question in which you are going to get a wide range of input on because their are a ton of variables to consider. First is, what type of person, how do you want to run your business and scale.
1. Type of person - are you planning on doing a lot of sales yourself? If so, you will need to hire someone to handle all the day to day operations business of running a brokerage. If you don't plan on doing sales, you need to have have some anchor agents to rely on for commission. Regardless, you will need to look at the team of agents you will be recruiting and pro-forma out whether you commission incomes can cover the spread of expenses
2. What type of agents do you want to attract (if any). Are you planning on opening a brokerage just to cover your own book of business and not rely on attracting other agents to your brokerage. If you do want to scale up by attracting talent, what is your differentiating factor and what type of agents will you be looking to recruit (seasoned or rookies).
If you are considering opening your own brokerage, I would first find a very good broker owner in your area and go work for them to see what they have to go through and how they have modeled their business. Also, I would try and form a team under that brokerage so that you can find out whether you like managing other agents, and whether you are a good team leader. Not all agents and brokers are good leaders, and that is OK. Most of the time, the top agents are poor team leaders because they are too busy with their own book of business. Also, speaking from experience and to be quite frank, managing agents is sometimes equivalent to herding cats. The barrier of entry into become an agent is quiet low (almost non-existent) so you get a very wide spectrum of capability. I was a sales manager for a spell at a local large brokerage, it drove me nuts. I now manage a 12 person team that is constantly in the top echelon nationwide. We focus on only hiring seasoned agents. Lets us run lean and focus on the types of problem solving that I like to do.
Further, to answer your initial questions:
Curious to know if any realtors have become a broker and started your own firm? - I am a non-competing broker for a team. Right now we have decided to leverage and work under another brokerage (a ton of factors in this). We still contemplate going at it ourselves as a backup plan (always have contingencies). Even though we work under a brokerage, we are completely autonomous and insulated for the most part from them (we don't rely on any of the tech and such). We just leverage their wonderful staff which allows us to cut our overhead cost
How was the transition? - N/A
What do you do as a broker on a day to day basis, and what do you delegate to others? - As a non-compete broker, I manage all the operations for our team which include, but is not limited to, risk-management, planning strategy, escrow coordination, client interaction, analysis, and all around problem solving. I have a counterpart that handles all the marketing aspects of the business and we work hand in hand to make sure that our marketing has a reasonable ROI.
Was it worth it? - How we operate, very much so
What do you wish you knew then that you know now? - Be slow to hire and quick to fire. Vet out your potential agents and make sure they know our expectations. Culture is huge for us, so if someone isn't who they were on the first and second date, get rid of them.
How was it building your team? - interesting. You have to manage personalities and make sure that additions to the team fit withing the team culture. I consider our team family and friends, they are all quirky in their own way and that is what I find attractive.
What are the titles/responsibilities of your team members? Me - operations. Counterpart - Marketing. Principals (team leaders (2)) - making sales and hopping in to drag transactions across the finish line as needed.
Hope that helps, I tend to get long winded and opinionated on this topic. That is because I have a passion for it. Feel free to DM me if you have any other questions.