1. That's the distance away from the camera where it stops rendering individual units and starts using sprites. The distance is configured in DMB. For example,
Code:
;;;;;----- Punic Skirmisher
type punic_heavy_peltast
skeleton fs_fast_javelinman, fs_fast_swordsman
indiv_range 40
texture carthage, tic/data/7/models_unit/textures/carthage_heavy_peltast.tga
model_flexi tic/data/7/models_unit/rtr_punic_skirmishers_high.cas, 15
model_flexi tic/data/7/models_unit/rtr_punic_skirmishers_med.cas, 30
model_flexi tic/data/7/models_unit/rtr_punic_skirmishers_low.cas, 40
model_flexi tic/data/7/models_unit/rtr_punic_skirmishers_lowest.cas, max
model_sprite carthage, 60.0, tic/data/7/sprites/carthage_punic_heavy_peltast_sprite.spr
model_tri 400, 0.5f, 0.5f, 0.5f
2. google
3. don't know
4. something like that
5. If you mean more resource locations, yes. If you mean new resource types, idk.
6. not me
7. extremely unlikely (I'd say no, but who knows)
8. There is a special forum here where you can registered your mod and post a link to your site/download page. If you used other people's work, be sure to give them credit. And I hope you got their permission first.