Clan war base

I believe that there should be a minimum amount of time that you have to "lock in" your clan base. I could set my clan base however I want for 23 hours and 59 minutes during the prep day, then change it to a whole different layout right before the war starts.

If everyones base was locked in for the last couple hours of the prep day, you would better able to prepare. I may change what troops I use depending on their base layout. I don't see an issue with having 22 hours (for example) instead of the full 24. I also donate a lot of troops to my clan members, seeing as I am the leader. This would make it easier to both train troops for my attacks while also training the troops to donate.

I believe the prep day is very valuable to scout your opponent. Giving them the opportunity to change everything you've prepared for one minute before the war start takes away from the value of the prep day.

The whole reason for the last second swap is to outfox your opponent and maybe get a sloppy one to prepare incorrectly and never correct. So no, I would not want to see them take away this factor of war strategy.

The preparation day is pretty much just a day to give time to train troops for the first attack, nothing more nothing less.

As the above member said, it's a strategy game, everything shouldn't be handed to you.