One of the key questions is whether it would entice the Duke and Duchess of Sussex to revisit their former residence, possibly with their two children in tow.
A vital consideration is whether senior members of the Royal family would show their support for the event as they did in 2014, when Prince Charles, the Duchess of Cornwall, and Prince William all participated in the opening ceremony alongside Prince Harry.
Circumstances were different back then.
The Duke was a dedicated, full-time working member of the royal family, and any family conflicts were handled privately.
Since then, the Invictus Games has expanded into a thriving global event involving 22 nations and over 500 athletes.
During last year’s Games in Düsseldorf, Germany, Team UK secured an impressive 69 medals with a team of 59 individuals.
Despite its increasing prominence on the global stage, the Royal family has refrained from publicly commenting on the event for several years, a fact not overlooked by Team Sussex.
For the Duke and Duchess, the potential return of the Games to the UK presents conflicting feelings.
The annual event has become one of their most prominent joint appearances on an international platform, showcasing their commitment to helping others.
For Prince Harry, it holds significant personal importance - one of the few enduring legacies from his time as a working royal that he takes immense pride in.
Watching the teams from the sidelines, surrounded by fellow military veterans, it's evident that this environment resonates with him.
His genuine happiness and comfort are palpable.
However, security concerns in the UK have become a contentious issue.
The Duke recently faced a legal battle with the Home Office over the withdrawal of his state-funded police protection.
While he plans to appeal the decision, in the meantime, he cannot rely on such high-level security and must utilize his private protection team.
It is understood that unless the ruling is overturned, he doesn’t feel comfortable bringing his wife, Meghan, and their children - four-year-old Prince Archie and two-year-old Princess Lilibet - to the UK.
There are arrangements for the Duke to return in May to attend a service at St Paul’s Cathedral marking the 10th anniversary of the Invictus Games, but he is expected to travel solo.
Regarding potential public support from other members of the Royal family for the Games on UK soil, the situation remains uncertain.
Currently, senior royals have more immediate concerns with both the King and the Princess of Wales undergoing cancer treatment, making it understandable that addressing anything beyond current priorities is challenging.
While palace sources have previously emphasized that senior royal members don’t interfere in each other’s professional pursuits, a lack of backing from senior royals for the competitors in a UK-hosted event could seem ungracious.
The Prince and Princess played significant roles in the early success of the Invictus Games through their Royal Foundation’s support, which was shared with the Duke at the time.
Their investments greatly contributed to the event’s growth.
It remains to be seen how the next few years unfold, but given the current circumstances, it seems unlikely that either Prince William or Catherine would join Prince Harry and Meghan in the stands.
A middle ground may be found with sporty royals like Zara and Mike Tindall, who participated in the inaugural London Games in 2014, engaging in a wheelchair rugby match alongside Prince Harry.
For now, members of the Royal family on both sides of the Atlantic must wait for the bid decision, with the UK competing against strong contenders like Washington DC.
The government has thrown its support behind the plan by allocating £26 million in the recent Budget to kickstart the bid.
Birmingham City Council's financial limitations mean that most of the funding must come from government sources and private sector sponsors.
Veterans Minister Johnny Mercer hosted a symposium in the city in March to raise crucial funds for the event.
The event coincided with the Princess of Wales' announcement of undergoing cancer treatment through a video message.
Initially, Mr Mercer aims to attract up to 10 founding partners to contribute £350,000 annually for three years towards the Games.
Subsequent partners are expected to join as official supporters, associates, and suppliers, while revenue will be generated from broadcasting rights, benefactors, ticket sales, and merchandise.
Potential investors, including BAE Systems, Deloitte, PWC, and Boeing, were urged by Mr Mercer to support bringing the event to the UK to enhance the country's standing as the best place for military veterans.
Mr Mercer emphasized the transformative power of the Invictus Games and its impact on the lives of injured veterans globally.
Former Marine Commando JJ Chalmers, an Invictus gold medalist and close friend of the Duke, advocated for private sector backing to empower the Invictus community.
If the bid succeeds, the Games will be held at the NEC, drawing competitors and families from 22 nations and providing a significant boost to local tourism.
Birmingham's central location, the revamped Alexander Stadium from the 2022 Commonwealth Games, and its strong ties with the Armed Forces make it an appealing choice for hosting the event.