Well here's the updated and final list of the maps (suggested by me) that can be look nice on the server
- Multigame (Necessary to add in my opinion)
http://css.gamebanana.com/maps/168909 - Really a good multigame map with a lot of different game modes, one of the best to suggest and popular on the other mg servers. (NOTE: Don't confuse this map with jacs, it is absolutely different maps)
http://css.gamebanana.com/maps/176060 Another good multigame map to make the set of regularly played maps more different
http://css.gamebanana.com/maps/135054 Multigame
http://css.gamebanana.com/maps/180170 Another good multigame

- Different:
http://css.gamebanana.com/maps/182524 Add this instead of one of tv_tower (there's 3 similar maps mg_tv_tower on the server)
http://css.gamebanana.com/maps/171208
35hp_beta3 also could be good for the server

- Courses
http://csgo.gamebanana.com/maps/185009 colors course.
http://css.gamebanana.com/maps/182149 - floyd course
http://css.gamebanana.com/maps/179182 - lego course
http://css.gamebanana.com/maps/179064 - phoenix course
http://css.gamebanana.com/maps/184293 - metal course