I believe in Primecoin 
I see the value in Primecoin in bringing some attention to Cryptocurrencies as a whole. If we can make it that all the computer power has actually some "scientific purpose"
No doubt. I feel Primecoin is going to give us alot more worldwide exposure that we've needed. Hopefully more devs can build off this innovation
Not sure, may just fail because of the name. Maybe I'm biased but it sounds like a name where it was a task just to come up withs omething that didn't exist already rather than try to implement a name that truly represented the idea behind the concept.