I'm unsure how effective bootcamps like this can be? Depends in the cause, but for areas like animal welfare the best skull building comes from getting directly involved. In these cases, it seems that directing people to opportunities which expose them to those skills is much more impactful than attempting to impart those skills via a boot camp. I'm also unsure if EA groups are well equipped to know what's skills are most on demand and, more importantly, how to develope them.

I agree if this is possible we should attempt this more often. 

In community building, we often optimise for "value alignment". This seems to be used to mean lots of different things. One definition that seems reasonably correct, is that one agrees with the basic EA principles. However, I think the trait I look for in budding committee, is not necessarily this. There are members that would self describe as utilitarian, or rationalist, but don't feel excited about the prospect of a highly impactful career. 

On the other hand, there are people who are excited about the EA ideas, will read posts if you mention them, have mixed but strong takes and when they're unsure, will be agentic to try things out. I think this is much more predictive of people following through on EA concepts, and isn't frequently correlated with initially agreeing with the values.