The Devs may be "reading it all" but that doesnt mean they will do something with it. Its a nice marketing shtick which all videogame companies use.
Naturally not all suggestions and ideas can be taken, but thats not what anyone would want anyway. Over time some of the suggestions and critiques do crystalize but... then you have the necessities of game development itself and in cases where there is a big feature bloat... some things get left behind.
I cant criticize or complain about co-op, or GM mode or the moding editor, but one thing that is sticking out are full voiceovers which are again - done most of all as a marketing tool, not something majority of players really want or appreciate. Sure you can see a few posts here and there saying they like it, but even those players dont listen to all of the voiceovers and regularly skip them, especially when playing again.