Another process is to use the 5 why approach to find the pain points.

You are facing a classic chicken and egg problem. You want premium projects but cannot get them because you haven't done any yet. To solve this, you need to think from your target customers standpoint. Why would a customer buy from you? What do you offer that others don't have? Once you define that, the second thing you need to understand is how companies acquire their services. The buying process in a company is different from consumer buying cycle. So you need to figure out how you will play this dance.
Lastly, to acquire customers, you will need to do some marketing and network. LinkedIn would be a good starting point.

Another option would be to start out small and bid for projects on oDesk, Guru or other similar sites
All the best.... Happy to talk if you have more questions.

Think of it from your prospects point of view too. If I have to sign up just to read a blog post, I will not. So, putting a pop up here is not a good idea. Also, I might already be a customer just coming to learn more about your product. Do you really want leads that are not well qualified? Because that is what you will get as there will be visitors who might not be right customers for your product. Instead why not build some other content like whitepapers, video, presentation, etc. that a prospect might be willing to sign up for. That will give you better qualified leads.
I help B2B clients build their product marketing strategies. Happy to chat if you have more questions.

I would say travel industry experts first. Based on what you have described, it sounds like you need to figure out what the market segment within the packaged travel/tourism industry that can benefit from your product. Then look at your competition in that market segment and see how they sell their product. Once you have a good understanding of these, you should then be able to figure out whether licensing is the right way to go or if there are other alternate models.

All the best.

Marketing to large companies is a team sport. You cannot expect to just target the decision maker and convert them. You need to really understand how enterprises make purchase decisions and also that you have diverse groups of stakeholders, from the end users, to IT, to Finance to Purchasing to the Decision Maker, to market and convince. So if your marketing strategy is just to target the decision maker, you will fail. What you need is to have a credible story for each of the constituents and reach out to them and help them build a business case as to why they should go with your product/service. Only then would you be successful in reaching the decision makers.

While I appreciate your reasoning about not giving away your idea, you have to look at it from the developer point of view too. If a developer works for you, he has to do it for free with a future uncertain payoff, especially as the idea is unproven and has no guarantee of success. The only way someone would work in this situation is if s/he has some assurance of a decent return on the risk s/he is taking on your idea. That would mean some part of ownership in the business. Also, you will find it hard for someone to do this full time without any additional income to support him/her. Which means you are looking at someone doing this in their spare time.
Also, remember, there are tons of ideas out there, what is important is how well you execute on them.

These are two big topics and a lot has been said about these on the internet. So, I will focus on few key points. In order to gain traction, you have to do some marketing. However, marketing has to be targeted towards early adopters and influencers. To attract them, your app has to be unique, engaging and solve one problem very well. Focus on getting your first 100 users from this group. Other things you can do is to reach out to various newsletters and blogs, fine tune the app store optimization for your app, make your app easy to share.

As for generating revenue, there are several models as well like ad-supported free app, freemium, in-app purchase, add-ons or cross sell. You have to think through which one makes most sense for your app. And none of these models work, if you don't have enough active/paying users. So, in early days, you have to focus on growth and expect to not make money for some time.

Well, hopefully you have analytics embedded in your app. That should also give you an idea of how many users are real vs spammers. Also, what sections of your apps are being used more often. It is not too late to add the analytics to your app.

I would focus on getting the consumer MVP done. Sounds like you already have conducted some interviews for the other two segments. If that is the case, then focus on developing a story highlighting the pain points and benefits for the payers and health system based on the interviews you have conducted so far. You can be upfront with them and let them know that you are still doing customer development especially on those two segments.

Can you segment by the demographic markers for the prediabetic users and then co-relate to similar groups in the prediabetes iPhone population?