As I said above, part of the "no mod" policy is to try to keep all platforms equal.
Glaring example is vanilla Fallout: New Vegas on PC. Poor consoles couldn't handle the open Vegas strip so they had to add some ugly and pointless partitions to divide it into three sections, each with a loading delay when moving from sector to sector. Naturally this was one of the first aspects that PC modders on Nexus addressed so now I can see everything from the Freeside gate to Michael Angelo's Workshop with no issues and walk the strip from end-to-end with no delays.
I'm guessing the disappointingly small build areas on Islas Nublar and Sorna are an identical concession. Even a partial lifting of a mod-embargo (keeping models and soundtrack under an asset lock to protect Universal's intellectual property ) would at least allow PC-gamers to address one of the most repeated complaints by expanding the play area. Apparently someone on the Steam forums has already done this in a crude manner.