Rangers sporting director Ross Wilson has admitted the club are "disappointed" to see such strong opposition to so-called Colts teams participating in the SPFL lower leagues.
The controversial topic came up again earlier this year as the Scottish Premiership champions and rivals Celtic remain keen to place a reserve side in the lower reaches of the league setup to aid player development.
It has been met with fierce opposition from bosses in League One and League Two, such as long-serving Peterhead boss Jim McInally who accused the Glasgow giants of "exploiting" smaller clubs.
Wilson is respectful of those clubs who may be dismissive towards the plans.
But he also believes Scottish football is missing a trick as it remains an outlier in European terms for not adopting the model.
Speaking as part of a webinar on the club's YouTube channel, Wilson said: "The B teams as we call them, rather than Colts, is a programme of player development we fundamentally believe in.
"We believe in it as a club, we believe in it as a group of people, and it's a proven model of success you can see in many countries throughout Europe. As every season goes past, another country brings that model on board.
"I think it goes without saying that we are disappointed that, as a country, we have still not made any headway on that. But it is a project we believe in, and I find it hard to imagine a moment we wouldn't believe in that.
"It's something we've given huge backing to. We played a big part in creating something called the 'Scottish Football Innovation Paper'.
"That was about much more than B teams, because player development should sit at the heart of Scottish football and we feel as a country we are missing a key part in young players' development, particularly in the ages of 17 and 21.
"It's no coincidence so many countries throughout Europe have gone in that direction, and we would hope this country would understand that. We also understand that in the lower leagues in particular, there are fans and friends that don't buy into that model, and we have to respect that.
"We have to respect that there are fans of clubs in different parts of the country who have got different opinions on that and they are entitled to those views.
"What we would always say is, we want player development at the heart of a national strategy, and we don't see that strongly enough within the country. What we've spoken about in terms of B teams isn't plucked from thin air, it's something based on strong research and models that work throughout Europe.
"We want Scottish football to be open-minded to that, but equally we as Rangers are also open-minded to anybody that wants to come forward with an alternative model.
"But we're not seeing that at the moment and we would love to see player development sit much higher up the agenda."
