The biggest problem for me is lack magic items that bloody work for Moon Druid + features + feats.

In RAW 5e, Moon Druid has got spikes of power at levels 2 and 10. They also get access to spells like Conjure Animals, Polymorph (turn ally into a giant APE), etc. Tasha really helped them.

On top of that, itemization is not that important in tabletop. However in BG 3, items are incredibly important. You can do some crazy builds with items, like going full poison with relevant items. In tabletop the best magic items you get are: Moon Sickle for spell DC and spell attack rolls + belt of giant strength, which should carry over to wildshape.

Some combinations in BG 3 are disgusting. I made Laezel into thrower with returning Pike and she deals about 20 damage per hit and it's not even that optimized. She also has got like 90% hit rate, compared to 65% of Moon Druid.

The only things that work are potions, which are everywhere. Moon Druid in particular should be able to benefit from Magic Items in Wildshape, at least some of them. Instead of that we end up with a class that’s great at being a meat shield and average at everything else.