It's an okay list. While I do agree Earth main has some serious problems, I noticed you didn't really go into what they CAN do and just talked about what they CAN'T do.

Earth main while tanky, is a glorified support unit that is hard to kill. That's it. They are also the only main in the entire game that can support ANY ninja, regardless of gender or element. Pose of Duel gives 30% atk/nin to any ninja that has a shield currently on them. While yes, the target needs a shield on them, it has no restriction outside of that - and the great thing is that it can't be removed by Han or Wind Main mystery.

I love Earth main, it's my favorite main. I've actually never changed from Earth main. I haven't even unlocked the other mains to change to. It probably hinders me but I like being loyal. But I do agree that earth main has a lot of draw backs compared to the other mains. Shields keep getting nerfed to the point where most earth mains don't even take it anymore. It has no way to deal with debuffs, super armor was nerfed so badly that it isn't worth using anymore. It's elemental standard deals no damage (For summons), has no chase 10s.

I think the issue with Earth main is the fact that they tried to model each main after a character "type" in the series - Earth main got stuck with being modeled after Guy. He should have been modeled after Hashirama instead.

Shields are good but they have their weaknesses as well. Shields can't be boosted, heals can (Hokage Tsunade, WM Healing Tips). Shields are a straight 10% resist (The standard anyways). In terms of Shield standard vs WM Heal, I feel like the WM heal is marginally better. Removing all debuffs, healing and has a chance of healing 2 people? Whereas Shield Standard is 10% with a chance of being 20%.

While yes, shields can be stacked. Shields disappear after 3 rounds of NOT being refreshed. That alone makes them weaker. Heals do not disappear. I mean, sure, ignite prevents it, but the standard still removes the ignite status. I can still put a shield on someone ignited, but it doesn't remove the ignite so they still take the 1999 ignite damage.

It's not so much as undervaluing a shield, it's more that comparatively, it isn't nearly as strong as WM healing.

And 3 turns of not putting a shield on Gaara and all that shield amount expires.

1k shield put on a unit. They get hit for 3k. They negate 1k and only receive 2k damage.

A unit gets hit for 3k, none is negated, water main heals it back. Receiving 0 damage.

1k shield put on a unit. They get hit for 3k, negate 1k and get ignited. They lose 2k HP as well as 1999 for a total of 3999 HP.

Unit gets hit for 3k, none is negated, they get ignited. Water main heals but ignite negates it. They still remove all debuffs, including ignite, and receive a total of 3k damage.

Mathematically, water main heal is better. I was also very generous with the shield amount given by EM standard, since it's 10% with a chance of being 20%, I just went ahead and gave it the 20% each time.