Hm...Side note, I'm not sure how I feel about potions and mana potions taking up inventory space. I end up leaving them all on the ground until I actually start using them (typically against the boss). And there's no real strategy to it, just "oh yeah, want to use potion now; fetch!"
As for the whole convert from ground thing...am I the only one who found DD more fun when I didn't know about converting from ground? It meant that if I lucked out and found the three best glyphs right at the start, it still wasn't the best move to pick them all up right away, because I might be preventing myself from getting two glyph conversions later. Or there would be interesting situations like "I'd rather have CYDSTEPP over fireballs...but if I converted CYDSTEPP I could get two extra glyph conversions, and fireballs are a decent substitute. Is that worth it?" It added an extra layer of interesting decisions for me. (Don't get me wrong--I convert from ground all the time these days; powerful trick is powerful. I just think it makes for easier decisions).