Start a list of games that you thought were excellent but that nobody seemed to play.
The first for the list is the Kohan series.
Kohan was a really different RTS mechanically with a very novel resource system, but what set it apart was their until mechanics. In their system each unit was actually a combination of three or four troops. When you built a "unit" in Kohan you would select the front line (four troops), two supporting units, and a commander. This made for some great tactical decision making.
On top of that the units had three movement modes that you had to consider while playing. Column settingmovement was fast, but reduced your defense and offense if attacks, then there was the average setting for moderate movement and no combat bonus or penalty, and the slow moving assault configuration. The trick was that when your forces were attacked they would retaliate without your order, the only way to break off the attack was to order retreat.
All in all it added up to a wonderfully nuanced RTS whose solo large maps were some of the most fun I have ever had in a RTS. The maps could take HOURS to win due to the heavy focus on tactics that their troop system created. You could build the most massive and unstoppable army and send it on it's slow march towards an enemy castle, but if you weren't careful your enemy would simply build an equally large number of light cavalry (much more cheaply) and race around you unseen and devastate your flank and your support troops, thereby forcing a retreat on your part.
The maps themselves were somewhat plain, but offered lost of terrain to exploit the games strengths. Building a fort network in a mountain pass gave you some sense of security, while marching your army across a large open field, surrounded by fog of war was a nail biter.. you could be on the verge of a flank attack, or stumble onto a monster cave with a very unfriendly and deadly dragon ready to destroy you.... or be defeated and give up it's gold and other treasures (like special troop unlocks)
I wasn't a fan of Kohan 2 because they tried to make the game more fast paced then it should have been, but the first game is still great and amazingly fun in multiplayer. It's on Steam and well worth the $10.00.