Make the game less irritating

Make scrolls always succeed, but with different returns based on the scroll's success rate.
- What I mean by this is, have 100% scrolls work as always, but make 60% scrolls give the full effect 60% of the time, but failures yield the effects of 100% scrolls, and 10% scrolls yield the full effect with the effect of 60% scrolls on failure, etc.
- For potential scrolls, just make them give 2 line potential upon failure and three lines upon success. The scrolls are rare as hell for non-botters and people who don't use NX to buy a merchant, so why make them blow up items?
- For enhancement scrolls, just make a failed enhancement undo the last enhancement used on the item. If the item doesn't have any enhancements yet, then just make it fail and do nothing!
- For dark scrolls, just make them yield the full effects more often and leave it at that.
- For Chaos scrolls, just make the success yield a random gain in stats and failures yield a random loss in stats.
- For Clean Slates, just make them undo the effects of the last scroll that was technically failed.

I agree with most of this stuff, but I have a few things I think might work better myself:
For Potential Scrolls; I definitely agree. I just wanted to emphasize the fact that it's retarded that they boom on failure. Booming on failure at all is a terrible concept that should be removed.
For Enhancement Scrolls; something EverPlanet, a game I've been playing a lot of recently, did with their enhancement system is absolutely amazing. When you first identify an item, it gets a Star rating, which is anywhere between 0 to 5. When you try to upgrade, if it fails, instead of losing the last upgrade, it loses a star instead, until you run out of stars. I think this system is absolutely amazing. It gives you the freedom to upgrade until you run out of "safety shields" so to speak, and then you can keep upgrading if you choose to risk it. It's one of the best upgrade systems I've run across honestly. I love it.
For Dark Scrolls; If failure has no negative effects, I don't think Dark Scrolls should even exist. I honestly never liked them in the first place, the risk:reward ratio is too high on the risk side, in my opinion. If they were to remove all booming effects and not add a new negative effect, Dark Scrolls should just be removed.
For Clean Slates; I think they shouldn't be 100%, but the extremely low chance is stupid, and from what I understand they can boom as well (Never really get any, so I never looked it up), which is even moreso.

Remove most of the scrolls and make them more streamlined.
- No more helmet scrolls, pant scrolls, sword scrolls, blunt weapon scrolls, etc. Just make Armor scrolls, Accessory scrolls, Weapon scrolls, and Sub-Weapon scrolls. Maybe keep Glove Attack scrolls as before, if only to keep people from freaking out over needing to re-scroll their armor with attack.

This would help so much, because 90% of scroll drops you get nowadays are worthless. Remember when a scroll dropping was exciting? It was so long ago.

Give players the ability to change their default keyboard settings
- Seriously, does this look like a decent keyboard design?

 Spoiler

- Just make a UI in the Character Select screen that lets the player decide where the default keys should go so that they don't have to reassign every key with every new character that they make. It can't be that hard!

This wouldn't be such a big deal if they didn't go crazy with new classes. Now that (what feels like) every month they give us a new class, this is a must, I agree.

Remove the clutter NPCs
- There are LOT of NPCs in this game that do absolutely nothing but take up large amounts of space in towns. The Maple TVs that repeat the same lines forever, the extremely old event NPCs that have little warp points around them that teleport players underneath their platforms while they're trying to move around the map, and those huge cart riders in every town who used to take the players to the PvP map but now just tell the players that PvP is accessible through the dimensional portal. All of them are useless, all of them look ugly, and all of them need to go.
- Basically, if the NPC doesn't give a quest or service at some point or another, take it out.

I believe there's some character linkage issue on why they cannot do this. Probably something to do with, "What if some character from 2004 still has an event quest that we created [NPC HERE] for?" It would probably create some type of mass runtime error issues. The better solution is to just throw all of these NPCs in an event map you can access from the Dimensional Doorway, instead of sticking a copy of them in every other two (Except any town that matters, because that would be too easy when you need to do said events). Move useless NPCs to the back, and keep the relevant ones in the front for easy access. Since every town has a DD, it would make everyone's life easier.

Put Cassandra, Gaga and the event shop NPCs on their own map
- The cause lag, they clutter up towns, and don't fit the themes of any town other than Henesys. Put them somewhere where they won't be a nuisance through the dimensional portal.

This goes with the above.