I wouldn't say Dear gave a lot more. That mark & goal in the first quarter were good, but after that his impact was minimal. He finished with 7 disposals and 1 goal, which isn't a lot from 72% TOG.
JJ was completely useless, and gave us nothing whatsoever, so by definition Dear did give more - but it really wasn't a "lot" more.
Like others have touched on though, you don’t really give people like Dear much of an incentive to “offer more” if someone like JJ is continuing to spud it up on half a mil a year.
There’s no harm in making a change during the year. Who knows it may spark a gain reaction. Might spark JJs ballerina toes into action, and might also give Dear that hunger to continue working on how to “offer more”.