As you wish.
1. Ten rings would make your character too powerful with the right equipment, especially a solo character (Thief/Mage...eheheh). Ring of Gaxx+Ring of Acuity+Ring of Wizardry+Ring of Protection+3 (there is a 3, right?) is already enough to make that specific character a lot stronger than normal.
2. Platinum, silver, and copper pieces. The idea is decent, but there is no need for it. You don't have to count out the money you hand a shop-keeper, do you? The game automatically does it for you. If this were implemented, the game would most likely put them into one pile. Sure, finding three differently valued coins would liven things up in the beginning, but when you have 50k+ gold, it doesn't really matter.
3. Good idea, although I do not see how sailing would be implemented into the game, let alone why. Brynnlaw was interesting, though.
4. Slaughtering drow and getting more quests is always nice, but the stronghold idea isn't that good. That would make the game seem to be set in the Underdark (moreso than Athkatla, anyway), when it is supposed to be set above it.
Btw, the EoU mod enables wearing more than one ring? o.O
__________________
|