Spoken like a true person who spent an hour investigating the platform and then moved on. All of the issues you've pointed out are solved using third-party packaging.
Heh Alex — the Meteor posse has arrived to this thread (I'm a big Meteor fan too!) I'll echo some of the others, that any issues with Meteor being ready for primetime don't have to do with the issues you cited, but more around being unproven to scale at high traffic (also not disproven).
I've been using Meteor since early 2013 on all my web projects, and for me the core team goes to the correct feature depth — there's 4000+ packages on Atomosphere — it'd be really hard to determine how deep they should go pulling things into the core.