I really can’t understand the assertion that taking Saddam (or his cronies) prisoner would be inconvenient for the US. Why exactly would it be inconvenient? Saddam Hussein and any other high level official is surely guilty of any number of atrocious crimes, under any legal standard you care to name. Saddam can be tried and convicted of hundreds of counts of premeditated murder of innocent Iraqi civilians. There would be no need to come up with vague charges pertaining to WMD, sponsoring terrorism, or violating UN sanctions. The man had people tortured and murdered routinely.
As for capturing heavily armed people, exactly how does one do this? According to the news reports, gunfire was exchanged, surrender was demanded and rejected, more gunfire was exchanged, then the house was demolished via missiles. Ordering soldiers to take the house using only tear gas and flash grenades seems like ordering them on a suicide mission. If someone doesn’t surrender, you use military force. If they surrender, you capture them and off they go for interrogation, incarceration by the US military probably overseas at Gitmo, and ultimate disposal via the future reconstituted Iraqi judiciary. No fuss, no muss, no problem.