Saying stuff like that makes you look like a pompous ass. Just saying.

Also, as it's been said, a 7 item build would completely unbalance things. By being limited to 6, not only does it cap your late game build, it stops you from half building a million things early. I know that as Udyr, I never carry around all three of the items for my Aegis, because my inventory is occupied already. This stops me from having to choose between armor, or health, or MR. It makes you itemize more intelligently.

It would be a nice change for season 3. Just like how they completely changed things like masteries from season 1 to season 2, I think the switch to season 3 would be a nice time to give this a little change-up.

6 is a good amount, maybe once you have a full build you get an extra slot to carry wards but even that is pushing it

I think having higher item evolution is a better choice. Easier to control the scaling (adding an extra BF sword to give an item more AD is easier to balance than an extra slot that could hold anything). Or just some new expensive items. True end-game 5K gold items. Hell, put a minimum level restriction on them even!

Junior and Senior members are not different at all. It's how much you post on the forums, not how long you've played the game.

Rather than a specific spot just for wards, I think it would be beneficial to have a seventh slot which only consumables can be placed in. It will work for a single stack of wards, a stack of health/mana pots, or an oracle's elixir if you're not sure when you want to use it (especially in Dominion's case due to the limited duration on that map). You would still be able to place any consumables in a regular slot, but this slot would be specific for consumables.

i wouldn't mind a extra slot for wards, maybe just a special slot that wards go in that doesn't take up one of your main slots.

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HONESTLY! If you're going to make an extra item slot, make one for consumables only. I'd love nothing more than wards/pots to have their own slot. Supports get shafted mid/late game and have to sell their GP5 or not buy an item because they have no room for wards.

Unless you have 6 'endgame' items, it's usually much better to dedicate that 6th spot for wards instead of buying that minor ingredient for your next item.
If you're the support, disregard previous line. Instead, always leave TWO slots for Wards on you at all times, unless you reach a point where (a) you can afford to finish your 5th major item; and (b) you can afford to only buy pink wards for the rest of the game.

Edit:
Supports can do just fine with the current 6 item slots. An example build is below.
1 - Boots
2 - Heart of Gold -> Randuin's Omen
3 - Philosopher's Stone -> Shurelya's Reverie
4 - Aegis of the Legion
5 - Green Wards
6 - Pink Wards