Just as a reminder of what a webmin rewrite represents (even a simple code audit), look at the numbers :)

Total Physical Source Lines of Code (SLOC)                = 289,259
Development Effort Estimate, Person-Years (Person-Months) = 76.80 (921.64)
 (Basic COCOMO model, Person-Months = 2.4 * (KSLOC**1.05))
Schedule Estimate, Years (Months)                         = 2.79 (33.46)
 (Basic COCOMO model, Months = 2.5 * (person-months**0.38))
Estimated Average Number of Developers (Effort/Schedule)  = 27.55
Total Estimated Cost to Develop                           = $ 10,375,113
 (average salary = $56,286/year, overhead = 2.40).

generated using David A. Wheeler's 'SLOCCount'.