So reading the warscroll for shield eels it doesn't say "+1" to their save if they charge but that their save becomes a 3+ so technically wouldn't they still get the +1 to the new save anyway?
As for point changes, it hurts but all it will show is that the same stuff will be used anyway. Thralls, soulrender, lotann, and aspect of sea are still hard to play outside of super fluff fun games with someone who also brings really bad models. I'm amused that the tide caster went up even though its rarely used, like why add 5 points to a unit I picked once in a blue moon?