There are a bunch of different things "wrong" with GiantessCity, but I'll echo your statements here. Their choice of moderators has always been pants-on-head retarded. I remember you could set your watch to HerTinyToy's constant fuck ups.
It might be a bit melodramatic, but I honestly think one of the best things that could happen to the "giantess community" would be for GiantessCity to go through some significant reforms (better mods, better quality control, consolidate sections, rethink rules, etc), or to die completely and be replaced with something new and fresh. Like it or not, it's one of the biggest, most visible giantess sites on the internet, and it simply reflects poorly on the fetish as a whole.>>7810692
DA really is sucky for explicit content. Not just because it forces you to post censored versions of that sort of content, but because it's also in the rules that you can't directly link to NSFW versions. People still do it all the time, but it only takes one or two prudes/trolls to report your content before you'll face suspensions and/or bans.
Tumblr is fine for posting explicit content, though the image resolution is pretty limited. The way tumblr works overall is kinda shit for artists though, it's a bit of a shit show if you want to use it simply as a "gallery" type site without diluting your posts with those from other artists.