Your band may be able to pull that off, but I've seen a few bands who change almost every single song to do it "their way". Usually, their way either sounds like they didn't learn the song, or it becomes tiresome real quick. The reality is that most songs are just fine as written and very few bands are good enough to make changes that improve the song...and changes for the sake of changes are a waste of time.
I have yet to see a band that has made changes to every song on a 40 song set list where any more than a half dozen of their "alternate arrangements" were worth listening to...