Aspirations are good, but not the best measure of potential success. It’s not the aspiration of a developed skill, but the reality of the lowest capability on the team. You stand for what you tolerate.
When times are good, things are smooth, the flywheel turns over predictably well. We can tolerate a bit of underperformance, even cover it over, make excuses for it and little difference is noticed. It’s when the pressure cranks up, deadlines get tight, specifications to three decimal places, that underperformance emerges with its full impact.
Your team’s ability for success does not depend on your aspirations, but depends on the capability of the weakest, the newbie, the slowest, the person not paying attention.
Do not sing songs of inclusion. Select well, induct, train and test. For one day, the cork will seal the pressure cooker and everything will depend on the weakest seal to contain the steam.