I didn't know that BrickLink (now owned by LEGO) had a programme called the 'BrickLink Designer Program'. I'd guess that this is where some ideas rejected by LEGO Ideas go. It seems like a crowdfunded version of that.
https://www.bricklink.com/v3/designer-program/introducing.page
I recognise some of the sets that are available through it from LEGO Ideas.
@Oliver Schick started
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I didn't know that BrickLink (now owned by LEGO) had a programme called the 'BrickLink Designer Program'. I'd guess that this is where some ideas rejected by LEGO Ideas go. It seems like a crowdfunded version of that.
https://www.bricklink.com/v3/designer-program/introducing.page
I recognise some of the sets that are available through it from LEGO Ideas.