multi tier to one tier with WCF and Linq?

This weekend I have played a little with Linq, and in my current project we are using WCF (I love it).

My current project is n-tier: per-table dal, dal, bll, sil, client.

Well, looking to WCF and to Linq we will have something like this:

per-table dal, dal --> Linq

Bll will implement service interface.

Sil --> user security will be into a dll that you can use through WCF (claims security).

What do you think? weekend paranoia? :P

[483 byte] By [creaturita] at [2007-12-27]