I like Chipotle. Vegetarians get free guacamole, and now they have a (so-so) brown rice option. Tasty burritos the size of swaddled babies.
However: one or more of the following problems is a near certainty in the last year or so:
1. Cross-contamination of fillings: bits of meat spilling out of someone else's order into my vegetarian order; meat-greased hands grabbing my ingredients, and my burrito being dragged through the slime of the dirty counter from end to end.
2. Incredibly long lines even at odd hours. (So I guess they don't need to improve!)
3. Some ingredients have run out. This is especially fun when you wait in line for 15 minutes and realize they really can't make a complete burrito after all. And even when the missing item is a major ingredient most people expect (like rice) they don't announce this to the line: they let everyone find out the long way by asking for rice.
So I may go back occasionally--but only at REALLY odd hours; maybe late morning? Times when they are clean and well-stocked, hopefully.