Making new objects takes too much work, not sure it's worth it. Besides, modern stuff doesn't look very nice and convincing to the WW2 themed game. Making some new competitive maps would be great, but they should really fit into the game, be similar to Vallente for example.
this map got good design, exploding barrels and plenty ways of tactics/random play
In esl I did a mappack with this map (valence v2) included, alongside with mp_valente, mp_industry mp_port and others. Unfortunately I dont remember all names. All were good playable, however esl don`t have the download anymore.
As I know mp_st-gatien contains some bugs, therefore this wasn't included in esl mappack.
You need to find out what the bugs are before you do some cup or ladder. mp_port contains some bugs too, but also good to play competive and tested in esl 5v5 matches.
Also, in my opinion mp_tripoli have the worst design here at the discussion and is nothing special to play.
I`m not active, however I would play eindhoven, naout, valente, maybe gunslinger, port && valence ;D