Yeah CPQ was so fun, I started my shadower during the time people actually played, by that I mean not exploit free/trade wins. And of course as LoveVictim stated.. I miss when that program wasn't around.
Other things that I miss include;-
Sheep vs wolf PQ - Perhaps my favourite event PQ, to me a symbol of how fun maple was during that era.
Bigfoot - This is one of my most selfish wants. I pretty much funded my shadower from selling leech, before potential system kicked in my best friend and myself was perhaps one of the only bigfoot leech selling shadowers in bera(yes bera... this might actually give away my old identity)
Visitor Event - Was a great party quest and well thought out event (which is rare from nexonNA) again like bigfoot amazing profit.
Pre-Potential + Duping - I have never adjusted completely to this system. I don't exactly hate it, as a nx hoar in rehab I know how easy it makes it to be "godly" but the ceiling is way too high now. As for duping, it introduced items that shouldn't be possible to make then on top of that made them easy to obtain, making legitimate items decrease in value massively.
Duping+potentials hurt GMS the hardest.