Competitive 1v1 map with 4 green fields - 4 spikes and 2 blue tiberium fields total. Lots of different tactics possible.
This map is inspired by the official EA map Small Town USA, but it will most definitely play a lot different.
Your main field has 30k (40k max and 10/sec growth) and your expansion has 50k (60k max and 5/sec growth). The 2 blue fields start out empty with a regrowth of 17/sec and 25k max. There are 2 spikes for each player as well.
The blue fields are located through 2 bridges, which can of course be destroyed as well. One bridge is convenient for the player who expanded adjacent to that position and the other bridge is convenient for the other player. So this will create some interesting battles as to who keeps a hold of those blue islands.
In the middle is a little city, so infantry can see plenty of play as well, but they're far away enough from the Tiberium fields that you're not completely screwed if your opponent takes a hold of those.
Have fun. :-)