[c-nsp] 'small' MPLS?

[Howard Jones]

(Troy Beisigl question prompted me to ask mine about smaller MPLS)

We have an existing network of (mostly) 7206VXRs which I'd like to run 
MPLS over if I can. Thing is, for historical reasons, there's isn't 
really a core as such - each router is an edge to something. From my 
reading, almost everything describes CE-PE-P routers, but are P actually 
required? I can see that as it scales, it's the P that makes that work 
better, but purely from the point of view of running some AToM tunnels 
or L3VPNs over a mixed underlying network, they aren't necessary on day 
1 are they?

Or should I just forget about it?

Thanks for any insight on this - everything I've read about MPLS seems 
to be aimed at Telcos looking to simplify their national network, not 
little guys looking at adding flexibility.

Howie