You're right, it is. For example:
- Some of his offensive profile "inputs", like K and BB%, are far from discouraging.
- He'll almost certainly get a chance to play out his peak years in the big leagues.
- The tools are existent
etc.
You said "ideal" but that word isn't appropriate. The general trajectory is what you think he won't follow.
I dunno. We have thousands of players to put into our sample and help build our general truths. Yeah, most specific players don't improve gracefully to 27 and then decline slowly. Some of them do wildly different things, like peak at 35 or peak at 23.... but can we really look at specific players and try to outsmart what we know as general truths? Is that a helpful way to approach the game or would it get us into trouble more than it would help us? I have no idea, it's baseball philosophy.
I would have to ask what your "couple reasons" are for why you think Lawrie isn't going to make positive improvements. It's not like he has massive holes in his swing, a big K%, an aversion to walks, an inability to juice baseballs, or an inability to hit a certain handedness or pitching. I'm not sure what troubling characteristics you think he has. I just see a guy who's hit tool is better than his gameplan right now, so he swings at a lot of pitches he should spit on, and unfortunately puts them into play weakly. But that seems like a problem that experience would help a lot.