Batch online now $2378, delivery 10 business days. I'll pass, mine is mining $15 a day

This pretty much what an L3+ brings in these days? That dropped off. It should do better once the LTC price comes back up though right?
Well yes and no.
By the time LTC goes back up (if at all) many new miners will be shipped and they will most likely exceed the number of miners broken by that time. So its kinda a wash
A wash because difficulty will be so high?
Yes if difficulty would stay where it is right now and it takes 4 months for LTC to go back to 300$ Your Profits per day would double (more or less)
But assuming the price would go up and at the same time more miners go online = difficulty raises. you will receive less LTC per day. These lower LTC payments multiplied by the new higher exchange rate, do not automatically result in higher Dollar Payouts compeared to today