I think all the pistols need a range outside the SMG's range.

Squad shared passive scans are fine so long as they aren't too precise. Scouts with max skills and a complex dampener should not be scannable with passives, regardless of how many precision mods are used.

Assaults that want to get in close and flank should have a reason to dampen, without needing to sacrifice all their fitting to dampeners.

Sharing weak passives is fine. Sharing scout-hunter passives is not.

I wouldn't mind if squad share was removed, but I think passive scans are mostly ok where they are. My scout suits often use a precision mod to scan assaults at max range, and my logi uses two for the same purpose. I won't scan scouts outside the inner ring, and assaults could easily dampen below my scans.

An Amarr scout could scan most scouts, but not at a long enough range to benefit their squad. It is enough to use as a personal tool for fighting other scouts in cqc.

The only issues I see are range amps having been nerfed too much, making more dedicated scanning fits more difficult.
The inner scan ring. This was the reason range amps got nerfed. Best to remove it, but if not, range amps can only be buffed if they don't affect the inner ring.
The Gallente logi's precision bonus saturates the EWAR field. It sets the required profile too low, smothering what could be a more interesting interplay between dampening and precision. Without this bonus we may well see some assaults fitting dampeners. And precision mods may well become more useful.
Amarr scouts' bonuses are a bit lacking in comparison to the others. Range amp buffs and active scan precision nerfs would certainly help it. Though an alternative where the Am scout scan bonus is replaced would also work.

I think the discussion is kind of moot, as CCP have stated that removing squad share is not really possible.