If everybody has stopped crying at a clearly labelled incomplete list, I've updated it with a few suggestions.
The whole point of this thread is to start a discussion about why things should be included or removed. Pull up an argument and back it up instead of crying about it.
>still not including these games
Starcraft/Warcraft
Total Annihilation
Homeworld
Empire Earth
Alpha Centauri
Let me go on by saying that these games revolutionized the field of RTS's at one point or another.
Starcraft and Warcraft were one of Blizzard's first games and probably some of the most popular and most played RTS's of all time. Warcraft III especially brought a lot to the table with its ability to be modded heavily and introduce gamemodes completely different from the actual game. It's still played to this day by many people and mods/maps are still being made for it.
Total Annihilation is another industry defining game, the ability to create as many units as your processor could handle to defeat the enemies wasn't something seen every day. Only Command and Conquer was able to do this and they still didn't have 3D(-ish) models to deal with. It also lead the way in the terms of mods, usually these mods came in the form of new maps and campaigns or even new units to the game. It also inspired games like Supreme Commander and Planetary Annihilation, and it even has an open source engine based off of it.
Homeworld is an interesting game, what made it unique however was the fact that you had battles on a totally 3D playing field, being able to have units on different positions on the x, y and z axis. Again, this was another defining game in the industry.
Empire Earth is an oddball game, but a great oddball game. What I mean by that is, there has already been multiple games out that this game encompasses within mechanics and such, it also brings new ones to the table. The similarities are apparent in games like Age of Empires, Civilization and the rest, but this game takes all of these mechanics and makes it great. Yeah, games are much longer for an RTS, but it works and this becomes apparent in other games like Rise of Nations. The build your own civilization feature was pretty cool and the ability to go from ages like stone age to space age was unique for RTS's like it.
Alpha Centauri brought a lot more to the table than what Civilization at the time brought with it. It had unit building and other features that make it more memorable in my opinion. Just overall, it was a better game in my opinion.