Not sure I agree with you mate.
Their pitch to promising, young, talented players and their agents is ‘come to Brighton, play every week in the PL, showcase your talent and if you get the opportunity for a move to a bigger club, we won’t stand in your way’.
There are plenty of recent quotes to exactly that effect from people at Brighton - David Weir being the most recent.
What they’re showing with Cucurella is that they blocked a move to his first choice (the Champions) even after a transfer request with a valuation the player and agent feel was unreasonable. They paid £15m for him, and apparently we were offering £40m - that’s almost triple their money in a year.
The agent then found an alternative move to another CL club, and they’re blocking that at the moment with an even more unreasonable set of demands.
If you don’t think ambitious players and agents will be watching this very closely, and simply won’t trust what Brighton are telling them in future - I think you’re being naive.
Why go there when you can go to Southampton or one of the other clubs with a similar model, and actually get your move when you want it?