See below. If you look in the Role Bonus section, the D-Scan-proof recons cannot fit covert cyno, so you can't be unaware of a in incoming hot drop on your accelerator...

Not showing up on D-Scan is already a property of any ship that can fit a Covert Cloak, like the T3 cruisers, which are already more dangerous than Recon ships and will continue to be so.

If you're in a plex, you're already protected from close warp ins, so if you don't want to use a warp gate scout, just make sure you stay out of point range from the beacon and fight aligned. SOP?

Scanner probes != Your Directional Scanner. Combat Scanner Probes are very much a 'conventional' way to find bad guys - especially ones that can't warp cloaked, and get hit with the full cloak delay if they're trying to ambush you cloaked. Meaning they won't be cloaked.

Gotta say, I really like the idea.

And while we are doing the unexpected, can we get rid of missile tracking too?

Even if you fit your Lachesis that way, that doesn't instantly mean he's pointed and dead. Even when the Lachesis bonused point range (I think it might need to be looked at), if your target did his homework he won't be sitting at the warp-in for you to land on him; he will be several kilometers away, so you'll have to use your MWD for a few seconds to catch him. Since you're warping in uncloaked, if he's aware (as he should), he will see you while decelerating from your warp: enough for him to try to warp away, especially if he's already aligned (as he should try to be). Most site-running ships can do that (the larger ones, such as battleships, should already be taking in account their own slowness and plan accordingly),