I like this idea. The roster really is overly jam-packed as it stands now.
[...]but if the devs are insistent upon more dinos I would highly recommend focusing on smaller species.
There are many smaller species already hidden within JWE. They've just been roided up to extremes. Let's take a little look at what exists in the game right now, the worst offenders (all in-game lengths credited to
hiplobonoxa at the JWE sub-reddit!):
Ceratopsids:
- Chasmosaurus: 7.5 meters length in-game. Actual estimates put it at up to 4.8 meters length (
-2.7 meters)
- Pentaceratops: 7.9 meters length in-game. Actual estimates put it at up to 6 meters length (
-1.9 meters)
- Sinoceratops: 8.1 meters length in-game. Actual estimates put it at no longer than 7 meters length (-1.1 meters)
- Styracosaurus: 8.0 meters length in-game. Actual estimates put it about 5.5 meters length (
-2.5 meters)
- Torosaurus: This dinosaur is pretty much accurate in-game size (Actual 8-9 meters length)
- Triceratops: 9.9 meters length in-game. Actual estimates put it up to 9.0 meters length (-0.9 meters)
Stegosaurs
- Chungkingosaurus: 9.0 meters length in-game. Actual estimates about 5 meters length (
-4 meters)
- Gigantspinosaurus: 7.7 meters length in-game. Actual estimates about 4.2 meters length (
-3.5 meters)
- Huayangosaurus: 8.5 meters length in-game. Actual estimates about 4.5 meters length (
-4 meters)
- Kentrosaurus: 8.8 meters length in-game. Actual estimates up to 5.5 meters length (
-3.3 meters)
- Stegosaurus : 9.8 meters in-game length. Actual estimates about 9.0 meters length (-0.8 meters)
Ankylosaurs/Nodosaurs
- Ankylosaurus: In-game length about accurate (7-8 meters)
- Crichtonsaurus: 7.1 meters length in-game. Actual estimates about 3.5 meters length (
-3.6 meters)
- Nodosaurus: 5.9 meters in-game length about high-end accurate (4-6 meters)
- Polacanthus: 7.1 meters length in-game. Actual estimates about 5 meters length (
-2.1 meters)
- Sauropelta: 8.0 meters length in-game: Actual estimates up to 5.2 meters length (
-2.8 meters)
Some carnivores
- Allosaurus: 12.0 meters length in-game, which is the rare extreme specimen. Most estimates put it at up to 10 meters length.
- Baryonyx: 9.2 meters length in-game, which is about accurate with higher estimates.
- Carcharodontosaurus: 15 meters length in-game. Actual estimates about 13 meters length (
-2.0 meters)
- Carnotaurus: 10.4 meters length in-game. Actual estimate for lone specimen up to 9.0 meters length (-1.4 meters)
- Ceratosaurus: Size update 9.0 meters length in-game. Actual estimates up to 7 meters length (
-2.0 meters)
- Giganotosaurus: 15.5 meters length in-game. Actual estimates up to 13 meters length (
-2.5 meters)
- Majungasaurus: 9.0 meters length in-game. Actual estimates don't exceed 8.0 meters length (-1.0 meters)
- Metriacanthosaurus: 8 meters length in-game. Actual estimates about 6 meters length (
-2.0 meters)
- Spinosaurus: 15 meters length in-game about accurate with actual higher-end estimates.
- Suchomimus: 11.5 meters length in-game just slightly more than most actual estimates of 11 meters length.
- Tyrannosaurus rex: 13.5 meters length in-game (based on "Rexy"). Actual estimates about 12.5 meters length (-1.0 meter)
Sauropods
- Apatosaurus: 24.4 meters length in-game which is a rare high-end estimate. Actual estimates up to 23 meters length.
- Brachiosaurus: 18.8 meters length in-game. Actual estimates up to 21 meters length (about
+2.0 meters)
- Camarasaurus: 18.0 meters length in-game. Actual estimates up to 23 meters high-end length (C.supremus).
- Diplodocus: 29.0 meters length in-game. Actual estimates for the larger type, D.hallorum, put it up to 32 meters length.
- Dreadnoughtus: 18.6 meters length in-game. Actual estimates about 26 meters length (
+7.4 meters)
- Mamenchisaurus: 26 meters length in-game, which is about the actual estimated length. However, one recovered specimen has been estimated up to 35 meters length!
Others
- Gallimimus: 4.6 meters length in-game. Actual estimates 6 meters length (+1.4 meters)
- Dracorex: 3.5 meters length in-game. Actual estimates up to 3 meters length (-0.5 meters)
- Muttaburrasaurus: 8.7 meters length in-game. Actual estimates up to 8 meters length (-0.7 meters)
- Olorotitan: 10.1 meters length in-game. Actual estimates about 8 meters length (
-2.1 meters)
- Tsintaosaurus: 10 meters length in-game. Actual estimates up to 8.3 meters length (
-1.7 meters)
- Troodon: 3 meters length in-game. Actual estimates about 2.4 meters length (-0.6 meters)
While not exactly small, the Ceratopsids, Stegosaurs, and Ankylosaurs/Nodosaurs need A LOT of work to give the game a wider variety of smaller species.
And, again, all credit for in-game lengths go to
hiplobonoxa who put in the awesome work at the JWE sub-reddit.