1. Everyone can use a buckler regardless of class or proficiencies. Reasoning: It is a natural reaction for a person flinching from A perceived attack to raise their arm to block it. Even a toddler in real life can do this. So there is no excuse why A commoner or mage in D&D can’t. Granted someone using a two-handed weapon such as a longbow will not be able to get the AC bonus from the buckler. And a wizard casting a spell with a somatic component cannot get the AC bonus. But anyone can use a buckler.
2. If you have bonus spell slots, for which you do not know a spell for, you may fill these bonus spell slots with lower level spells.
8. Better assisting your allies is always nice right? New homebrew rule is going into effect.
Now, when you assist a party member you are not shooting for just a +2 bonus for them on your roll of 10 or better. Now, when you roll they get a +2 for each 10 points in your roll. So, roll a 32 and they get a +6 instead of a +2.