I'm in favor of allowing mods whether it would be for QoL improvement (Resolution patch etc.) or cosmetics like caesar zeppeli's headband: https://www.nexusmods.com/metalgearsolid3mc/mods/47

As long as it doesnt provide an unfair advantage over a run that doesn't use mods, I'm cool with it.

• Do you agree with the Game Split for SRDC?

Yes

• Do you agree or disagree with the HD Emulator board removal?

  I didnt have much input with Xenia either way, but I would agree to remove if there's a consensus to do so. 
  
  An alternative could be to give its own section for MGS3 HD Edition as other or something.
  

Do you have suggestions towards the new category setups?

 No

Which timing method do you prefer specifically for MGS3 MC PC - Loadless IGT or RTA?

 I've been running PS5 and Switch versions of MGS3 mostly so I dont know whats currently favored atm.
 I'd prefer IGT score screens whenever possible. 

 If there's proven elements to challenge IGT score screen accuracy (like with MGS2 V's fix cause of fast credits) then I would be fine with loadless RTA as the alternative.

Although I dont run it as often recently, I dont see anything wrong with this strat.

Any% climbs up and back down the ladder, no fight (on console)

Obviously cant do this for Big Boss rank, so I'd say have at it 👍

I've heard that the load times on definitive edition are slower than standard. I run GZ on PC that way as well as PS5 console (via PS4 title).

You can certainly speedrun definitive edition for IL's if you're aiming for IGT. For a rull run on RTA, you would have slower loads working against you.