Homebrew 3.3 - 3.2 games compatibility & a dvdX question

[vegeta4ss]

where can I find info regarding which games will not work on a 3.2U system but would work on a 3.3U? I want to downgrade for all the right reasons but if some of my backups will no longer work then that sucks.

I looked in the wiibrew wiki but I couldn't find anything specific to this, and I know its probably common knowledge to a few of you.

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Can dvdx normal install run alongside of the advanced ios249 build? I have a friend who for some reason really wants dvd playback support now that he has gamma loader, and I was always told to remove the old dvdx first. I dont want to brick anything.

 

[M31Supernova]

Same concerns here...if I'm to end up talking myself into a downgrade for brick safety I want to do it safely and know the cons.
Think I might of seen some the procedures touched on in this thread: http://gbatemp.net/index.php?showtopic=118446&st=0
btw, you seen this info on un-bricking: http://framework43.blogspot.com/2008/10/banner-bricks.html