How is that better than or different than what we were doing with the 5e rules?
In 5.0, the players picked the skills, and customized the background without needing to consult the DM.
However, the background means experiences that a character had where they were growing up, and what was going on there. It is something that requires the DM to be in the loop.
More positively, when a player picks the details of a background, the DM can see the stuff that the
player cares about. And by grounding these choices within the setting, the DM can supply adventure hooks relating to the background, as well as events in the future that involve these ambitions. Keeping the DM in the loop, helps the DM create a more interesting, narratively consistent, and rewarding game for everyone.
My point being 5.5e is not much more than a few house rules codified and the majority of the problems shifted to other places in the rules.
I kinda agree with this. Many setting decisions that had "defaults" in 5.0, are now openended in 5.5. The DM and players need to actively choose a setting, such as Greyhawk in the DMs Guide, purchase an official setting, such as Forgotten Realms, Eberron, Ravnica, or so on, or be comfortable with homebrewing ones own setting.
IE, what good are the new rules outside of organized play like AL, or open table games?
My groups(after much discussion and reading the books thanks to content sharing) just don't see value in the new rules. Yes it is anecdotal, but that doesn't make it any less real.
I am curious what AL is doing. I am guessing they will go deep into the Forgotten Realms setting. But I could also see them switching to DMs Guide Greyhawk.
Heh, if they "dont see value", then it might be because they are actually playing in the Forgotten Realms setting and might not realize it.
Tho I assume you also mean new rules such as Weapon Mastery and so on.
When I DM, it is my job to care about the players. But for my own characters, I care about spellcasters and dont pay too much attention to Fighter rules (beyond keeping track of game balance issues). As far as I can tell, many Fighter players are happy with Weapons Mastery, and if they are happy, then I am happy.