Looking for creating thinking to solve a problem

Hi Everybody

I work in Life Sciences so my customers are pharmaceutical companies that cover many therapeutic areas (Immunology, Oncology, Infectious Disease, Ophthalmology, etc…) and each of those TAs has many projects in the client pipeline in various clinical stages. I want to list each TA my client is working on along with each project in the TA and see particular meta-data like the clinical stage, partner, etc…
I have played around with making each TA a Goal but the number of Goals I can have is limited, I've tried Tasks but I don't have a way to make custom fields in Tasks plus I end up with MANY tasks which I have no way to associate with one another except through a naming convention.