Glad that people feel it's working quite well already with 1 spy and a moving Crabe, but I do feel that the fact they instantly close and get the armour bonus while stunned is a bit rich. For half the cost of the Crabe itself in spy+E? Steep. If it works in practice though, it works in practice, this is mostly just reflection and theorycraft by me.
As I said in the other thread I linked to, Crabe is just an interesting unit. It definitely is outside the standard counter mechanics, being a skirm range, assault HP unit with riot AoE. But the curling up mechanic adds really interesting counterplay with artillery, baiting, etc.
Several people including myself have wanted to add a drone spider for a while now. But Google has veto'd it until drones have better controls. Reasonable I think.
An artillery unit that sits safely in the hills and can bombard things with impunity feels nice to use, but is potentially really, unreasonably hard to counter on certain maps. The drone spider is a solution to that, we can give it plenty of range and let it stay safe in hills, but there are ways to mitigate it's damage (Make AA) other than spamming shields. The traditional response to artillery is (should be) to just attack it, so it's important to have another option for spider artillery. Another potential form for spider artillery is low enough damage that you can repair through it, with a ballistic projectile to get the range bonus from hills so it's not just a boring arty unit.
On recluse changes, I've been floating the idea of removing it's enforced missing (ATM it does not lead correctly) and slowing the projectile a little to compensate. That wont help vs Crabe, it might make recluse good enough to field on it's own merits, but that still means the Crabe is the factory climax since it's great vs recluses. We could massage both the ranges a little perhaps so that the Crabe needs to unpack to chase or needs to be somewhere high up to counter them, though. I think that's not a bad idea actually if we want to bring recluse balls back.