I somewhat agree with the original post, but...I really do appreciate the variety of shots and some of the more challenging shots on JP compared to most other "predictable, cookie-cutter" layouts. I also dislike the art, I find the rules unnecessarily cumbersome, and the requirement to HAVE to shoot all shots a bit heavy handed (especially if you just need the "O" shot). I find the truck captive ball shot super boring as well, and the missile launch shot is difficult, but I don't find it super rewarding. Without the giant T-Rex head moving around and eating the ball, you also lose the #1 feature from the Prem/LE that gets people excited.
Then the theme integration: I also just don't care for it. Graphics and effects are amazing at times when the dinos show up, but the call outs seem dated and generic, and I just don't get into the progression of the "moving around the park."
All that being said, JP and IM are 2 of Stern's best layouts ever. It's the layout (and pure quantity of shots and geometry). They're challenging and different. I'm a decent location player, not special by any means, but I get bored of many layouts that are just so easy to hit repeated shots (Willy Wonka, Munsters). JP is deeper and more challenging than most, so good players love it. I really like it too. But Deadpool (and a few other Sterns) trumps it in many categories, except layout in my opinion. And what DP lacks in QUANTITY of shots or toys (T-Rex head, 3 flippers, cool ramps, Raptor pin), it offers some of the most rewarding shots and combos ever (Snikt!, Katanarama combo, final battle/quest finishing blow at the scoop). It has so much VARIETY and player-oriented options of strategy. I feel like I have to play JP the same each time in a more linear way. Yes, if you STUDY the rules, JP's enjoyability and fun factor go way up, but if you're not a "rules nerd," JP might not be for you.
I have the LE ranked #10 all-time, so I obviously appreciate it, but it's all just love for Keith's layout and the T-rex. If Stern can finally give him Zombie Yeti and Lyman on his next design, we might end up with the greatest game ever. The Pro is solid, but I think your criticisms are very valid. Personally, I would not put the Pro ahead of LOR, DP, IM, WD, Tron, Star Trek, or MET Pro models. But I do rank the Prem/LE above all of those except DP, LOR, and IM. (side note: my wife also shares your wife's opinion as she was super underwhelmed by it, and ruled it out early in our search for a Pro pin for our home. and yes, we went with DP and have zero regrets). But to each their own. Everyone likes and appreciates different things. I do think if you spent more time with the game and gave the rules a once-over, your opinion may improve. Mine did.