ability to turn sea dollars into different eventcoins or to catch event coins

i want to be able to turn sea dollars into ghoul coins and holiday coins, maybe like have an exchange on 2 sea dollars for one coin this way you can get speicial items from the celabrations shop all year round. i think it will make the wait a little bit shorter but you still have to work for the coins. or if we could catch leftover coins in the item fish.