I didn't realize 75% of LTC had been mined already. That makes me wonder what will happen to price as we approach that 100%. I suspect that once it hits 90%, price might break away from the BTC price as scarcity with be the main driver. But what will happen when it hits 100%? It should then stabilize and the community can focus on adoption.

After the cryptos, including Bitcoin, hit 100% volume, the only thing that can drive price at that point will be use cases. Either the coins will to be used as currency, in which case market activity will determine price, or they'll just sit in perpetuity. Mass adoption of one crypto will drive the value of all other cryptos down. I think it behooves the entire crypto community to ensure that doesn't happen. There needs to be competition in crypto usage as currency.