If i'm not a Mod i'll let you my thoughts here. 

- ¤¤ Timer rule must be clear, it's not speedrunning menu, they're the same for everyone so Time should start when you gain control of your character and end on the moment you lose control of it like every other speedruns. Changing the rule wont affect other time you just have to modify them on EDIT section of the speedrun retiming things arent hard. ¤¤

- Add plateforms so other runners can add runs as well, the game is also out on Xbox ONE and PS4 since 20 nov 2015.

- ¤¤ Create Categories also for other mode i saw runners doing Normal for exemple ¤¤ and it is not slower concidering the Perfect Parry speed strat.

Personally, 
I'm fine with the way it's timed, although we definitely need a field to submit the ingame time.
"[...]it's not speedrunning menu[...]" well, the menu is part of the game, can't say it's not part of the run.
Also it's easier to start timing when we hit new game, makes it more consistent.
but I agree stopping the time on "clear" is a bit inconvenient,
should be on last hit on the boss.

Other platforms? +1
Subcategories for all difficulties? +1

- Added PS4 NG and NG+
- Leaving timer call as is since timer start at "New Game" is usually the standard (i.e Kingdom Hearts and any other JRPG). Very few games actually start with first movement of character. 
- Not adding different difficulties to not clog up board. If I have to, it'll go under misc. 
- The year doesn't matter as the first release of the game was in 2013. 

P.S: Easiest way to reach me is Twitter. I just happened to check my email :/

I added XBox One as a Platform as it was missing.
As pointed out by Token, there might be slight differences between PC and Console version,
so PS4 / PC / XBone will stay different categories for now.
As requested, the missing difficulties were added.

If we can prove the console version is the same (except for that one costume?) we can merge the categories.

17/07/16:
-Merged all 3 Consoles into 1 for easier sorting / submitting. 
(I changed Very Hard to vHard & Inferno to Inf because of the new layout. Inferno would appear below the other diffs)
-Added ILs

Re-Evaluating Timing start & especially end.

/Edit: Changed Timing to be more consistent: 
Starts:
For NG Any%: Start on Difficulty Selection (last input on main menu)
For NG+ Any%: Start on confirming game reset (last input on main menu)

Ends:
End on last hit on Magatsu Hino Tsurugi (pretty much last gameplay input)

For Individual Levels refer to NG+ rules.