[Posted this on the discord earlier, but someone said I should post it here too]
Base mana regen should scale to some degree with your max mana, as it currently doesn’t feel great to build max mana. It moreso means you can get off a little more burst, but then just have to wait even longer to get back to your max mana value. Although, I also understand that having a scaling value too high could cause issues. As such, I’d like to suggest that your base mana regen be equal to 5 + 5% of your max mana. This would leave it at 10 for the base 100 mana, 15 for 200, and 20 for 300. Also, mana regen as a mod should be a little more accessible from items, and I think it should appear on amulets and relics.