That presumes people have been following the woes of previous people who put in deposits or that they even care about how people in a higher configuration can "cut in line" (which is how Tesla had done things the whole time).
The Model X ramp is looking very similar to the Model S. We even had a price change. The 60s (and 40s) where not produced until later. If that is what you wanted, you had to 'defer' you reservation. Hell, you couldn't even get red paint or coil suspension. until after Q1 of 2013.
One thing that is different with the Model X ramp is that there are a lot more reservation holders at launch than there was with the S, the production capacity of the line is dramatically larger, and the number of markets involved with the associated shipping/delivery logistics is larger.
Something that I expect to be better with the X, is the initial quality/reliability of the vehicle. Over the years the warantee service costs for S is definitely a line item that I expect Telsa would want to reduce for the X. (at least on a per vehicle basis) There are no competitors for the Model X. If you want a Model X, relax, they will get it to you as soon as they can, while keeping their business intact. If that is not acceptable, go with something that isn't the Model X. In terms of volume, Tesla is still a niche manufacturer. It will take them time to grow their business, and they have been growing like gangbusters for the last 5 years.