I like how you guys haven't discussed my idea at all. No negatives pointed out so far.
Also just like in the previous topic, most people talking about this do not play, do not skill and/or still have a lot of scrolls.
Let me give you some insight: we currently have 8183 DXP scrolls in game. Yes you can say that many of them are on accounts, which haven't been used in a while, but even if the word doesn't reach those people, we'd still have tons of them.
There's absolutely no way we can balance this out, which is why this will never happen.
Now with my idea, most of these scrolls will stay deserted like they are right now. Let's be realistic, people still have them since they haven't skilled and/or played in a long time, so these wouldn't affect anything. Also to make it more fair, they would be reverted to their original length (20 min). We could make a week-long announcement to people who donated for them, so they could use theirs in time, without having to deal with the duration decrease.
We would just have to make a duplicate out of the current scrolls (same model would be used, just different ItemID), but their length would stay at 1 hour and they would tradable. This way the purchase from EC store would actually be viable, especially to people like me. In this case, we wouldn't have to deal with the balancing, since we start from nought. The players with their current scrolls, would still have what they initially purchased, so it wouldn't be unfair in any way.