Fan noise is definitely relevant to usage. If you're playing rock music, a little bit of noise floor would not be noticeable. However, if you're doing a speaking event in a house of worship, even the slightest extraneous noise can be heard by some and should be avoided whenever possible.
Wedge angle is never perfect. It would be cool if speaker designers could design a cabinet with an angle adjuster built in. Until then, using appropriately placed audio logs*, the angle can be easily adjusted to your needs.
*Audio logs are simply 1' pieces of 2X4 either painted black or wrapped in gaff. If you can't find them in your local store, I'll gladly sell some to you for the low low price of $19.95 each.