I suppose I could understand a badge swap to have a little fun with the automotive cognescenti. Ninety-nine percent of people would never notice, but those that do might share a laugh with you. If it's cheap and reversible and you have the time and money, why not? I'm in the Sienna club too, and some of those guys have actually made the switch, right down to the steering wheel cover, with photos posted on the forum! Go see for yourself (
SiennaClub.org)
My Sienna is outfitted as closely to Lexus as any one gets, but I've never felt compelled. As far as the Avalon goes, it's drivetrain and specs are a close match for the ES, and they both share the Camry platform. I started shopping the ES, but the Lexus dealer made the mistake of showing me a low miles Avalon Limited.
Backseat room, Touring suspension and price delta made the decision easy for me. I trundled off to the Toyota dealer for a new one and saved probably 15 grand. I suppose I could use some of that to spring for Lexus badges, but I spent it on a trailer hitch and bike rack instead. Try that with a Lexus.