Why the Secret Spell Scroll system would have never worked.

Just out of curiosity, how good is Aswan after they changed it? EXP/time wise.

I haven't tried much.
What they essentially did is ruined hell mode for party attack/conquer mode. The old strategy was to just mob on the bottom floor and ignore the top platform, but now you lose if a certain amount of mobs get to the "random disappear with the power of holiness" place.
For a hard mode solo (not finishing, just grinding for 10 minutes), on a 147 Shadower with a 14.5k range buffed, no exp mods or damage buffs, I just got about 5%, maybe a bit less. The towers hit a lot, base their hits off your HP, ignore all defense and defense modifiers, and ignore iframes. Hell of a potburn unless you have Vampire or another drain skill.
Yeah, so about 30%/hour with no exp modifiers or buffs with solo grind, dunno for party, haven't tried for a long while. Doubt it's even that good pre-16x.
Apparently, it's the best source of exp after 16x though.