Most of my ideas are from old concepts, and exclusively DC:
1. Lois gets knocked up. New Adventures of Superbaby. Except, of course, she has triplets.
2. Secret Society of Supervillains. Emphasis on the word "secret". Team book with Harbinger (who is now dead, damn it), Artemis, Atomic Knight, Looker, Firehawk, the old Green Arrow ally Onyx, the old Detective Comics Bat-ally Swashbuckler, and some new character concepts. They tell the JLA and the JSA that they are a new team, and their main purpose is to catch the newly reformed Secret Society of Supervillains. But everytime they bust a villain robbing a bank or holding hostages, the loot disappears, and the villains start complaining that they were set up. So who is the actual Secret Society? No one, not even Batman, believes a paranoid Captain Comet when he says that things are not what they seem.
3. Shuriken. Daughter of Katana, trained by Richard Dragon, better fighter than Lady Shiva, never misses with sword or arrow. Only thing is - she's got narcolepsy, and will fall asleep without notice. Manga art. Slightly humorous, slightly sad.
4. My one Marvel concept is "Days of Future Past" from X-men, detailiing just how exactly each of the Marvel Universe met their fate at the hands of the Sentinels, and the Sentinels' interaction with extraterrestrials. In this, Galactus finds himself harnessed as a Sentinel fuel source, and the Skrulls pay tribute to their robot masters. Silver Surfer narrates, because he's a whingy bitch. Dystopic grit.
5. Aquaman. Inspired by the fact that the current version of Aquaman sucks. Atlantis gets hit by an earthquake and drops miles deeper beneath the sea. The Atlanteans must (again) resort to genetic engineering to survive extra pressure and lack of light. Aquaman volunteers or is coerced to be the test subject. The experiments make him one big mother fucker, complete with gills, scales, the ability to regrow limbs, and the social etiquette of a pirahna.
Pissing in the wind. DC don't take submissions.