In addition to this, level 4 or lower main deck effect monsters don't have 2000 or more ATK , unless they have some kind of restriction
Marcy: Somewhat ironic in that Sarah's abilities work really well with cards from the Caesar deck, but this deck has quite a lot of ways to generate artifacts easily, meaning that it is very likely Sarah enters as a 6/6 and then boosts all of your other creatures
You can make the argument that you dont need more, but the option would be nice
For example, a creature with lifelink that deals damage to you will still cause its controller to gain life, even if that damage would reduce your life total to less than 1
Evolving Digimon or digivolving is a long and important process of the game that requires significant time and attention
Heck, Sanga, Suijin, and Kazejin themselves required 2 tributes in order to get them onto your field