Johnny
That's always the case, though, in either scenario.
Right now, the randomization algorithm starts at one of the spawn points (chosen randomly). One change I could make that could really alter everything would be to make the algorithm start at a completely random spot. So, you won't necessarily start near anyone when you're dropped.
I like the idea of having small clusters, but I could see going either route.
The only issue I have with close clusters is that you will end up with someone on the outside, which will allow them to grow easier than others. That said, that's part of the chance you take with a Random Placement.
Mayhaps a compromise would be place everyone two days before the start, in a random order, rather than place them as soon as they register? Or perhaps allow in a random placement that there are more spawns, or have the placements allowed to be farther than the current 150/100 setup?