Agreed on all fronts. The naming has gotten completely out of hand.
1, 3, 5, 7, series
3XX should denote displacement
A "t" suffix is for turbo
X for all-wheel drive
i or d for petrol vs. diesel
It's clear to me what a 530txi is. But maybe us "insiders" who can decode the nomenclature are the exception?
With mobile phones you have the "Samsung Galaxy III S" competing with the "iPhone 4". It's like the "BMW 435i xDrive" competing with the "Audi A5 Quattro". One of those is much cleaner / clearer to me than the other. Maybe the analogy is a little strained, but you get the idea.
2006 BMW X3 3.0i (manual, m-sport, xenons, premium, pdc, servotronic)