On my recent visit to the other genre related sites, I found these two comics, those worth to mention.
Dungeon Masters II, can be found at giantessclub (Only in 1 page yet. But has a potential)
The Adventures of Superstar I, can be found at bestoryclub (Ubergirl dedicated comic. Personally not being a fan of BE thing, but this is worth to check)
There are some other stories (e.g. Giantess Containment Bureau) which seems to have some potential but I haven't purchased them yet.
These both sites are mantained by botcomics. The stories are generally short (12-15 pages per issue) and considering the length some may find the prices are bit high.
By the way, It would be nice to see more genre related content in their stories.