Ah, I miss so much also. I miss seeing people be force to rp-fight 'cause there was no fighting system. They would show off their hard earned weapons that were useless. I miss the feeling of finding a diamond, that always made my heart skip a beat. I miss roleplaying with a lot of people in the Temple, I miss only having Hydlaa and newbs being a relative rareness (compared to today), I miss glitching my way inside houses, and I miss the lack of fall damage, so many people jumped off the big tower... And I miss Bloodclaw Inc. as well, of course.
I don't specially miss the sewers. It was nice in the first times, actually, with rooms filled with rats and people walked around in groups a lot. Other then that, when it became what it is today, it just lost the little goodness it had. It also seemed endless in the beginning, doesn't anymore that I know most of it.