A Reddit user was kind enough to do a bit of research on some of the projects that are currently proposed to be added to the Gridcoin whitelist. I'll link them here:
The issue with these projects --as the Reddit user notes-- is that they all currently have some ambiguity surrounding whether or not they will have workunits available for an influx of Gridcoin users. (Please note that SourceFinder anticipates having many WUs available at some point in the near future due to receiving work for ASKAP as 
Why does a project having Workunits available matter?
Gridcoin could be described as one big supercomputer, right? On those BOINC projects where volunteer computing is not sufficient to crunch the amount of data the project has, we can add the project to the Gridcoin whitelist and point thousands of individual computers' worth of crunching ability in their direction. When a project does not have enough workunits available, we are pointing our resources at a project that, quite frankly, doesn't need it.
Big deal, right? We'll just let Gridcoiners camp out on the project and get paid for whenever they are doing work. Unfortunately, that's not currently how the Gridcoin Proof of Research (PoR) reward mechanism works. No matter how many workunits a project has available and how hard their contributors have to work, it receives an equal distribution of daily PoR rewards. That means a project like NFS@Home, for example, where every cruncher is crunching 100%, 24-7 receives the exact same amount of GRC distributed among its Gridcoin team as Sztaki Desktop Grid, which has zero WUs available most days.
Another way of saying that: If you have a 200 Magnitude on Sztaki Desktop Grid and a 200 Magnitude on NFS@Home, you earn the exact same amount of daily Gridcoin, except your computers are busy crunching 24-7 on NFS@Home whereas you might go entire days with no workunits on Sztaki Desktop Grid.
If we allowed several projects with insufficient workunits into the Gridcoin whitelist, a savvy Gridcoiner could restrict their efforts to only those projects. In this way, they could earn a high magnitude and GRC while only intermittently utilizing their hardware and minimizing their costs.
Other than the issue of gaming the Gridcoin system in this way, it also represents a very inefficient use of such a great resource. If a project is able to sufficiently get by with volunteer contributions, Gridcoin is better off "pointing our supercomputer" toward projects that need our assistance. If we don't do that, we are not leveraging this outstanding scientific resource to the best of its abilities.
Thoughts? Let's hear them below.