Pros:

Pros: Environment - what the?you really got the environment of SH SI - really like a SI monsters Clickable Objects - I like the newspapers and the story

Cons:

Cons: Survivor/Weapon Replaced - Your map entitle SH so if there is a SH fan and he/she want to play this,he/she will expecting the SH environment not the survivor and the weapon,you can add a weapon not a survivor...but replacing them i think its not a good idea...coz other survivor and weapon skins will not work for this map.  No Puzzle and Easter Egg? - For a SH map this is very important...you can do this actually what they did on Suicide Blitz...  Simple Ending/Multiple Ending - I think the best finale for this is a boss finale also if there are multiple ending like in the map No Parking this will be perfect..  No weird things/happenings? - SH is well known for its weird things or happening  try to do this...like in the map Silent Fear he really got it.

Conclusion:

I really love the environment coz no one can did it...if you want to remake this one,i suggest to do it in left 4 dead 3...