Cautious optimism that there could be better times ahead was fuelled by the performance of the British boys in the US Open juniors last week, with Oli Golding, George Morgan and Kyle Edmund all reaching the semi-finals.
Golding went on to lift the trophy, beating junior world number one Jiri Vesely in the final, building on Morgan's run to the semi-finals at the Australian Open and Liam Broady's success in reaching the final of Junior Wimbledon.
Smith, head of men's tennis at the Lawn Tennis Association, is encouraged but he knows climbing up the senior rankings is a different challenge altogether.
"It's great for them," said Smith. "It doesn't mean there's a guarantee they'll have lots of success in the future but what it does show is there's more numbers; certainly in that generation there's a strong group so hopefully they can realise the hard work really starts now."
With his Davis Cup captain's hat on, Smith has invited Golding, Edmund and 16-year-old Luke Bambridge up to Glasgow to be part of Britain's Europe/Africa Zone Group II promotion play-off against Hungary, which starts on Friday.
The trio will hit with Britain's team of Andy Murray, James Ward, Colin Fleming, Ross Hutchins and reserve Jamie Baker and have the chance to experience the atmosphere of a Davis Cup tie.
Smith added: "I think it's really good for them to come up and get a sense of what Davis Cup is because all the players take a lot of pride in pulling on the Great Britain shirt and something we've tried to create with our new set-up is a real feeling of team spirit and togetherness.
"One of the pleasing things when I was out in New York was seeing a lot of British coaches and British players and everyone was there on merit."
Victory this weekend would take Britain back to the second tier of Davis Cup for the first time since 2009, and it should be a formality.
The opening singles rubber between British number two James Ward and Hungarian number one Attila Balazs is the only match on paper that could go the visitors' way, although Ward is ranked more than 100 places higher than his opponent at 149th.
Balazs, who has not played a match off clay since March, is virtually a household name compared to Hungary's number two singles player, Sebo Kiss - a law student without a world ranking.
The 27-year-old will face Murray later on Friday hoping to avoid the fate of Luxembourg's Laurent Bram, who filled the same role in the last tie in July and failed to win a game in three sets against the world number four.
Britain should also comfortably win the doubles on Saturday, with Wimbledon and US Open quarter-finalists Colin Fleming and Hutchins taking on Balazs and Kornel Bardoczky.