For me glint is still too expensive in exchange for energy, but it cost idk 3k glint for energy in diamond 2 and I get for win over 1k glint with full team of gfs, so 3 wins for 1 energy with win ratio over 50% maybe 60% is still 6 games, but maybe at higher leagues with many blackfoils it reduces to 2 wins or maybe close to 1 win for enough glint to buy energy. I not have data so can't say. It is problem of course, because, if someone no have any other things to buy, people spent earnings for energy.