Drawings showing this design for the redevelopment of New Street Station are not set in stone and may be amended to ensure the #500 million scheme has the 'wow factor', Network Rail confirmed last night.
The partnership behind the project is considering changes following a muted response from the Birmingham Planning Committee, where members demanded a higher quality of architecture for the prestige city centre site.
A Network Rail spokesman said drawings published earlier this year were very much outline impressions of what the finished station could look like.
"Of course that may not be the finished design. We will certainly listen to people's comments during the planning process. We don't want to deliver a damp squib," the spokesman added.
He said the computer-generated images had appeared to be so realistic that the impression may mistakenly have been given that all design aspects were finalised. This was not the case.
Sources close to Network Rail concede that the project design team was taking seriously comments from Birmingham City Council's Chief Planning Officer, Clive Dutton, who said there was some way to go before the new station could be described as having the wow factor.
Mr Dutton said: "A world class city requires a world class station. We should be negotiating absolutely excellent design here. This is a highly significant proposal in terms of our international city aspirations. It is so important to get it right."
Ben Herbert, Network Rail media relations manager, said: "Clive Dutton makes some valid points. Of course we want to deliver a station that has the wow factor and is something that Birmingham can be proud of.
"We will be working with the planning committee to refine things, the design and appearance of what the station will eventually look like."
Mr Dutton's worries are shared by the council Labour group. Deputy leader Ian Ward said he was concerned that, based on the drawings provided by Network Rail, the refurbished station would not be "architecturally significant".
Coun Ward (Lab Shard End) added: "This is a once in a lifetime opportunity to deliver something very special in the heart of the city centre. Of course it must have the wow factor."
The design debate was further fuelled by Birmingham architect Dan Smyth, whose Building Design Partnership worked on the remodelling of Manchester Piccadilly station.
Mr Smyth, writing in The Birmingham Post, said the new New Street should "regain the civic pride expressed by the Victorian station builders". The design had the potential to be the 21st century equivalent of the great mediaeval cathedrals, he added.
Birmingham Chamber of Commerce chief executive Jerry Blackett is warning critics to be careful.
Mr Blackett said there had been "pie in the sky" proposals for redeveloping New Street in the past, some of which would have cost #1 billion to deliver and were totally unrealistic.
Mr Blackett added: "The design looks perfectly good to me. I am sure it will be a great success.
"It is important that we do not become sidetracked by other issues and that we keep up the pressure to get approval."