Disable clipboard history
I use KeePass to manage all of my passwords. This means I need to copy every password into my clipboard before I enter it. Normally, it then clears the clipboard after a few seconds automatically. SwiftKey's nifty clipboard history feature doesn't get cleared though. It's a really cool feature, but I would personally like to have the option to disable it.
I've been using SwiftKey for a long time, and it's definitely my favorite. They've added features I've requested for in the past, and I'm very grateful for that.