Aight, those are some nice suggestions. Let me start commenting each one of them.
-Uchiha Ultimate Jutsu. I've planned for a long time to give branches to Uchiha Skill Tree. I don't really know how players would respond to this though. But here is what i suggest and you guys feel free to share an opinion.
Branch 1: "Sasuke's Sharingan". Basiclly what you get to buy in this tree is Amaterasu, Susano's and for Ultimate Jutsu i was thinking of Eternal Mangekyou Sharingan which won't do any damage to you.
Branch 2: "Uchiha's Sharingan". What you get here is Tsukiyomi, Susano's and for Ultimate Jutsu you get Shunsui's Eye. The idea for that Eye is to be able to control an opponent's body for some period of time. This could be an awesome chance to get the opponent away or get him closer so you can use a jutsu on him! Well i didn't really thought of how i would make that happen but shouldn't be too hard right?
Branch 3: "Kakashi's Sharingan", or just simply a stolen sharingan. You get Kamui damaging jutsu and Kamui Teleportation here. Pretty self-explainatory.
-Chiken Event.I will have to decline this suggestion. Boosting someone's stats isn't that good of a idea.
-Tournament.Again same thing like with Chicken Event. No stat boosting. As for Tournament itself it might not be a bad idea so i'll think it throuth and consider adding something similar.
-Sage Mode Jutsus.Yeah, i was actually thinking of some jutsus to add for Sage Mode. It needs some boost compared to Curse Seal which is way more popular ( I think ), so yeah, i shall be adding some jutsus for it.
-New Clan.That Clan won't be added. Maybe somewhere in the future, but not now. Following Clans will be in next major update : Dust, Lava, Orochimaru ( Yes this will include Curse Seal aswell, which will be removed from non-clan tree. Sage Mode won't be achivable so easly if i add this. It shall have special reqs. ), Black Lightning, Taijutsu Master non-clan. More info on these Clans shall be posted in the future.