"The Championship will be a vital part of the structure of English rugby, " said RFU chairman Martyn Thomas.
Tries from Tal Selley, Martyn Thomas, Rhodri McAtee and Alec Jenkins saw them to a comfortable 26-5 victory.
Martyn Thomas told BBC Radio 5 live he had "every confidence" in Johnson, whom he dubbed an "outstanding man".
Jamie Roberts, Leigh Halfpenny, Dan Evans, Martyn Thomas and Jason Tovey are other potential candidates, with Morgan Stoddart still injured.
Some premature celebrating by Roberts allowed Dragons full-back Martyn Thomas to make up some ground, but his desperate dive proved in vain.
Goodfield's signing follows that of fly-half Shaun Connor from the Ospreys and the re-signing of Ashley Smith, Martyn Thomas, Steve Jones and Gethin Robinson.
But the Dragons rallied and got themselves back into the game through Martyn Thomas and Andy Williams, only to be let down by Aled Thomas' kicking.
But against the run of play, the visitors got themselves back into the game just before the break when Martyn Thomas intercepted Martin Dixon's floating pass.
Yachvili converted and before he added a penalty Dragons full-back Martyn Thomas launched a daring counter-attack that ended in disappointment as he sent out a poor pass.
Young number eight Toby Faletau, who has already won Wales honours, starred while centre Pat Leach, full-back Martyn Thomas and Wales lock Luke Chateris also performed well.
But the Dragons scored the try their pressure deserved moments later when Parks, like all good open-side flankers, was on hand to barge his way over after Martyn Thomas' break.
After making ground he fed wing Martyn Thomas who found Charvis, the skipper able to stretch to put the ball on the opposition line under the posts, making Sweeney's conversion simple.
But with the likes of RFU chairman Martyn Thomas likening Farrell to Martin Johnson, the revered captain of England's World Cup winners in 2003, there seems little chance of the hype dying down any time soon.
O'Gara and Dragons replacement Shaun Connor saw yellow for a bout of fisticuffs at a ruck close to the Welsh side's line and just moments later, Williams used his brute strength to barge past Harris and Martyn and Thomas for his second touchdown.
Add Martyn Williams, Jonathan Thomas and Andy Powell - who all finished the match against the All Blacks - and the starting number eight on Saturday, Ryan Jones, and Wales coach Warren Gatland has that magic thing: options and strength in depth.
The initiative then swung back to Young's men with hooker Thomas claiming his second, followed by skipper Martyn Williams, fellow flanker Maama Molitika and wing Gareth Thomas' second.
He hurt a rib in the Ospreys' loss to Stade Francais but lines up in a back-row with regional colleague Jon Thomas and Blues open-side Martyn Williams.
Back-row Jon Thomas withdrew after he failed to recover from a finger injury, with Martyn Williams replacing him.
One fan, Josh Thomas, has flown from Hong Kong to be home for the game and another, Martyn Piper, has travelled from Alberta in Canada.
BBC: Crawley fans head north for Manchester Utd FA Cup clash
Jones replaced Hook in the last quarter at Murrayfield and he joins Six Nations reject Martyn Williams as the second-most capped players in Wales' history behind 100-cap rugby league Crusader Gareth Thomas.
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