I'm not a Konami genius or anything, but I thought the more control Kojima got the worse the games got.
MGS1 and 2 godlike. 3 the last great game. Twin Snakes servicable but kinda sour when compared to original. I read Kojima oversaw the changes did he do it by himself with Silicon Knights or was the original team involved? 4 what was small cracks in previous games, nonsense dialogue, wacky characters, long monologues, crazy action, out there plot, struggled to be charming anymore, Kojima has a lot more control here right? Peace Walker is dreadful. I assume Kojima at this point is synonymous with Metal Gear Solid and gets everything he wants and it's pants. MGSV he even gets to decide on pointless Hollywood actors and writes pure drivel and tells 85% of the story through tapes, retcons tons of shit and in general is not very interesting.
If that's wrong please forgive me but I assumed he had competent writers and designers working alongside him them gradually started trying to take all those duties on himself and push his 'vision' more with no one willing to push back. Kinda like Lucas and the prequels trilogy. The best Star Wars movies his involvement isn't as strong.