It depends on the agent. From what I can tell, looking at other people's listings, a lot of agents want grossly over processed, noisy HDRs and neon colors (or maybe that's all they are willing to pay for) which is unfortunate. My personal style is to make it look as realistic as possible, and as close to how your eye would see it, while doing my best to hide the fact that it's an HDR to anyone unfamiliar with photography. Most realtors want very bright photos that make every room look bigger than it is - that way when people are browsing listings, they really stand out. You can make the darkest closet lit by one tiny bulb light up like a bright summer day with the right processing, and that is usually what they want.
If you're doing aerials, it entirely depends on the property and the lighting conditions - time of day is very important. Not every property looks good at the same angle, especially with the way driveways, front yards, windows, large trees, landscaping, etc. differ so much. Or maybe the neighbors house on one side is super ugly, and you don't want it in the frame. Or maybe someone has a giant motorhome parked somewhere you don't like, and have to work around that. It's different for every single property - part of being a good photographer is being able to find the best composition on the 'fly' so to speak, especially on a paid shoot.
I am so rarely asked for video that I don't offer it - not worth the investment for me.
I shoot Real Estate professionally (though not so much with my drone due to local restrictions), if you have any other questions feel free to ask. Oh - and it's not at all lucrative, I have a 'real' job as well haha! I'd also strongly suggest you really know what you're doing before you start charging money - lots of people buy a drone or fancy camera and think they can start charging for work (not saying this is you - just a general comment).