Allow for hard mode accounts to get 10x exp after 99 combat stats. Give oppurtunity to reset exp to lvl 99 exactly for inconvinience of no exp drops at 200m exp if people want exp drops. People could also just make exp 1x at like 190m exp if no exp drops is a big deal for them.
Make snapdragons more common, i get 20 times more toadflax (for saradomin brews) than i get snapdragons (for super restores) on my hard mode account