Fall of the Rising Sun Ultimate thread - download link in that first post.
... and, if you ever liked Webster's Game Fixes Only, THEBERBSTER recently re-did that:
THEBERBSTEES All In One Beginners Mega Mod
Both mods have their own environmental tweaks.
Another one to consider would be Bleiente's
Ralles RealModPack for TMO_RSRDC_OTC, which is a "souped-up" version of TMO/RSRDC with Bleiente's environmental tweaks that are nicely done.