Hmm… I’d be a little concerned that having a perpetual debuff might open the door to some future OP options in other areas.
I do want the crocodiles to be better-represented than they are. I’m using Sarcorixis on my team, and while I love it I fully admit it’s NOT one of my stronger team members. It’s no pushover, though, and I’d rather not have it’s SIA changed from the defense it already has (unless it went to full invulnerability). Giving Lockdown Strike improves it by letting it snap first before a “Rampage & Run” kind of deal, but also provides it with a swift strike in case it needs to finish off weakened prey.