The Natural Weapons could be useful, but at level 7 it's really not that great.
I'm not sure which side of this Crawdad is on.
I wouldn't really call it a niche spell preventing damage to the party and avoiding nasty enchantments is always nice I think you raise some good points.
I'm not saying that you should definitely pump your Int if you're an Eldritch Knight.
More useful if you take it through Ritual Caster, but still useful.
Do you have some magic, but want even more magic? It patches over his lack of range without losing anything in the bargain.
You are always going to be bad at one important save, and while Wisdom saves are important - I'd even recommend going Resilient Wis - it's perfectly okay to have a weak Wis score.
Or a mystical warrior equally skilled with blade and spell? An archer, for example, does not benefit from Tripping Attack to the same degree as a melee Fighter because you are at Disadvantage when attacking a Prone enemy.