Things that would just be SHINY:
When a hunter engineer rides his motorcycle...his pet sits in the sidecar.(Moon thought this one up).
Complete sets of green gear purchasable every 10 levels.... as a gold sink and assistance with leveling. They could even be current sets... or ugly sets....just so long as I could get a complete set.
Engineering letting you make Lightning gloves(fist weapon) and Lightning staffs. For the staffs think something like a cattle prod. For the Gloves go read Girl Genius and think of Captain Dupree and her hand shocking device.
MOVING Steamboats on rivers. Complete with Cannon and Skeleton Crews. Most would be NPC's...but one would be an neutral Skeleton faction that featured an ingame casino with horrendeous odds. Shortly after this you would have the ability to purchase an instanced "private room" and play cards with your guildies. Private room would require Revered or Exalted rep.
An ingame camera that let you take fuzzy 'old style' pictures. Also a picture book(like the keyring) that lets you store these pictures as keep sakes.
A mage ability to bring up a 10x10 earthen wall. The wall would break LOS and would exist for 6 seconds. The wall could be targeted and dispelled(via the normal dispell magic spells) or attacked. Movement through or over the wall would not be allowed. Flight would get you over the wall if available.
A shaman ability to create a hole in the ground. 10 yards deep, 5 yard radius. See above. But not targetable or dispellable. Lasts 3 seconds?
Grapple guns. Engineering crafted. Target a location at least 10 yds above you, fire gun, get pulled to that location.
Victorian style clothing craftable by Tailoring. No stats just perty. Includes long white lady gloves and top hats! Also a held that is an umbrella or a cane.
Well...thats it for my brainstorming....see you guys later.