Great point on the visual milestone suggestion — we're actually planning ability unlocks per rank, so stay tuned for that. On capping levels: the issue is it would break the prestige loop. The whole point of prestiging is that your next run feels faster and more powerful. If heroes are hard-capped at level 10 waiting for mats, every run starts the same slow way regardless of how many prestiges you've done — and several prestige tree perks (like rank cost reduction) lose their purpose entirely. That said, your instinct about milestone moments is right. We're looking at making rank ups feel more impactful visually rather than gating progression behind them.