Well a few things i'd like to see covered more for level design/construction
1. work is done not using any 3rd party programs that have to be purchaced
(bryce/3dmax) assume anyone reading does NOT have access to these) but can
referance 3rd party softeware that is FREEware ( giving a link as to where
it can be found). BEcause not everyone can afford to go out and buy Bryce,
3dMAX, Milkshape, or even a good paint program like Paintshop.
Inother words use only what you got under Windows, 3DGS or freeware
2. Indoor working .. how to build complex levels without overworking the
portals, polys (i.e. laying out your level so that at any particular view
the rendering is reduced). An order to how you should actualy build a level and what to avoid during each step. ( lay down all your blocks, then texture, then light, then sprites, then entities ... and so on.) How to texture outdoors so they don't look all streatched out and blotchy
3. outdoor areas. how to work with hmp and when is it good to use an hmp and when its better to use blocks. work with differnt basic enviroments, how to mask the horizontal distortion to the sky without using the mnts scene.
Day.night transitions, sky domes, layered sky entities.
4. effects... how to deal with specal effects in indoor and outdoor enviroments
particals sprites etc. how to make the enviroment non static ( exploding walls, breaking glass. sounds effects, local, enviromental, contiuous, random, background music.
Level changing.. differnt ways to change levels ( keyed to an item or action, hit a "zone" boundry, simulate a seamless zone/level change . carrying the player(s) over level to level without resetting the player(s) info.
making "instance" levels vs standard levels ( if your unsure what I mean by instance levels they fall mostly to on-line games where a player( or group) enters a level and only that person(s) are in that level. any other person or group entering the same level are placed in thier own seperate copy of that level. Anarchy online used this and Worlds of Warcraft will be doing the same)
In otherwords cover aspects of the enviroment, good tips and things to avoid doing. I would avoid workign with entities other then those used in building the enviroment ( as that can be saved for another tutorial all in itself)