Just wanted to add something different to the list..

The Union scouting feature, or more specifically it's recommended tab which lists people who are part of a Union already.
Every now and then I get an invite/scout (often by repeat offenders) which is easy to just decline but still, it does get me to raise an eyebrow every time.

If there's anything I personally frown upon as a guild leader of any game, it's sending invites to members from other established guilds unless they themselves solicited for it beforehand. It's nice that you're able to scout people from other guilds who are looking to transfer but I highly doubt that the recommended tab is actually able to distinguish them from those who don't.

Believe it or not, I actually use the back button. Sure it does seem to take a second or so longer on some occasions but most of the time I personally don't see much difference if at all. Even if it's a little bit faster to just go through the same windows again.. a few clicks is saved is a finger less phased ~I don't know (＃￣ω￣) I don't find it such a hassle anyway but I assume loading times are different for everyone.