We are in the process of tweaking the CS:GO #3 maps rotation by adding and removing maps and in some cases need to build the zones for the maps whilst we do this. As this is an ongoing process, please post here if you would like to see any tiers 1 - 2 maps added to rotation.
I have added the following map rotation for now from the tiers 1 - 2 map list I found on Reddit and have gone through to ensure the zones work, more are incoming.
Current Rotation
surf_ace_fix
surf_aircontrol_ksf
surf_akai_final
surf_annoyance_njv
surf_atrium
surf_aweles
surf_beginner
surf_borderlands
surf_boring_new
surf_calycate2
surf_calycate_ksf
surf_classics2
surf_colours
surf_delusional_
surf_derp
surf_derpis_ksf
surf_duggywuggy
surf_eclipse
surf_forbidden_ways_ksf
surf_fruits
surf_grassland
surf_ing_njv
surf_island
surf_kitsune
surf_kz_protraining
surf_leet_xl_beta7z_
surf_lessons
surf_lullaby_ksf
surf_lux
surf_mesa_aether
surf_mesa_mine
surf_network_2008_final
surf_pox
surf_prelude_ksf
surf_rainbow
surf_rebel_resistance_njv
surf_reprise
surf_rookie
surf_simpsons_go_rc2
surf_spacejam
surf_sundown_njv
surf_sunnyhappylove
surf_surprise_fix
surf_tensile_njv
surf_trance_ksf
surf_utopia_v3
surf_vegetables
surf_waterworks
Planned Maps
surf_mesa_revo_go - Requires zoning.