Personally, I'd say that if they were going to "change the design" then they might aswell just bring the old "Undisputed" WWE Championship belt back. I mean, in it's short time it had built so much heritage, it was a shame to see it go to waste.
As much as I loved the "Undisputed" WWE Championship, I have nothing against the most recent Spinner/Non Spinner championship. It looks nice, it suits most people and it's building a great heritage in itself.
Randy Orton, Edge, John Cena, Triple H, Batista, Jeff Hardy and Sheamus..just to name a few have held it already and it's only been active 5 years. It's already built great prestige.
The old Undisputed Championship was held by Triple H, Undertaker, Brock Lesnar, Eddie Guerrero, JBL and more.. That built a great heritage aswell in it's short reign.
That's about all I have. I like the current WWE Championship. But if they were to change the design, I'd either like them to bring back the Undisputed Championship or come up with a REALLY AMAZING design that beats both the current and Undisputed Championship designs put together.