The technical report includes stats generated from phpmetrics such as Lines of code, Cyclomatic complexity(CC), code violations and CC chart. I also check if the plugin creates news database tables and give a brief summary on the technical side of things. I don't really consider cleanliness/size of the code in the reviews unless it is way beyond the average.
Let me know how you like it.
Would be interesting to see some reports about the real estate plugins available for Wordpress. I did a quick review myself and did not find any really high quality plugins but would be good to see some more detailed analysis.
This is a short article I wrote about real estate plugins in WordPress: