By a Dom2 roguelike, I primarily mean bringing in the magic paths and spells (possibly even forging), along with the different nations as player "races". But other ideas could be incorporated, such as the artifacts (anyone ever find it silly that you could forge ancient artifacts BTW?
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I didn't intend to use any Angband code, only borrow ideas and UI heavily from Angband, for two reasons: 1. I don't want to spoil Angband for myself, and 2. I don't want work in C; I prefer to use C#
What don't you like about Angband's character progression and inventory system? The inventory I think I can see; it's the limited slots that are annoying. I plan on having multiple inventory pages like Nethack and ADOM so that shouldn't be a problem. As for the character progression, what's wrong with it, is it too fast? Well how else do you expect a human character to defeat a dragon or other pretender god?
Or is it just too artificial, with everything depending on "character level" which is gained almost exclusively by slaying monsters? That can be changed, and indeed it has in several Angband variants, such as CthAngband, where there are no character levels, and skills are improved by successfully using them at a dangerous enough dungeon level to correspond to the current skill level.