Airbnb has allowed syncing with the Homeaway calendar for ages, but the reverse is not true.

We were in Silicon Valley in the '70-90's and the market is not for the faint of heart.There can be issues for agents/brokers that private investors don't have to deal with, so IMO, it's questionable if an RE license has any added value.

What do they do for agents?

Also looking for agents who are investor friendly and understand our numbers! 

Wholesaling is considered a gray area judged on intent, long story short Some brokers & lawyers are for it with the proper disclosures and while other brokers are against it no matter what.In any case, I'd suggest you join a local investment group of some type and ask around for agent recommendations or hopefully there's a PA agent here on BP that'll answer this for you.   2.

We have experience from working for Agents to the Property Management of residential and commercial properties, so we understand the challenges that real estate investor face.

Look for agents that sell REO properties.

However it is a little unconventional and rather than giving away money you don't need to give away I would focus on developing relationships with agents that are familiar with what you are looking for. Agents

For agents that have been in the game for a while, what are some challenges you faced as a new agent?

Look for the bios that talk about working with investors.Call the local REI clubs and ask for references.Search Bigger Pockets for agents that provide intelligent responses to forum posts and blogs.