Well, I haven’t that much of an issue with FIFA trying things at a youth tournament. But I have heavy doubts about these changes.
The strangest one is unlimited subs. Imagine how the games will be slowed down with all the changes. This isn’t ice-hockey, it will take far more time. And of course, shrewd coaches will make the most of it in order to slow down games even more if needed.
The 2x30 minutes effective time is clearly in order to move the game towards american sports, allowing TV channels to put in advertisements at every break. This is an economical ploy, something which should be fought against with all means. At a youth tournament, it’s ok, but not at televised high level.
No opinion on kick-ins. Not really needed I think.
The five-minute suspension is interesting in theory, but thinking about it, it’s not needed. Again, this isn’t ice-hockey, and being one man down for a few minutes isn’t as punishing in football. It will lead to phases of purely defensive football by the team reduced to ten men, and as such, the risk is that it will slow down the game. Combined with the unlimited changes rule, it’s a recipe for disaster.
Bottom-line: don’t change anything, but try by all means to improve refereeing and consistency regarding their decisions. That’s the biggest problem we have in the game right now imo, along with far too much money poisoning it from the inside.