Yep. I suggested to implement dedicated recon units, like say platoon-sized formations, along with the corresponding view ranges, after the original COTA was released, iirc,already.
My very first suggestion was to introduce single scout cars, actually, but it seems like the engine seems to have problems with employing single vehicles (I can't remember the reason, maybe because they get killed instantly when they get in effective range of larger calibre guns or maybe because they tend to surrender instantly?).
While recon Coys or even Bns were often "misused" as spearheads and agressive probe forces in WW2, the standard procedure still was to employ 1 car or a pair of recon cars to recon a given sector (say a regular scout car and a long/medium range radio version).
The Germans employed their 6- and 8-wheelers, used halftracks and recon cars with retractable telescopes/periscopes, the US mainly employed Greyhounds - sometimes even Jeeps - for the recon role, the Brits had their scout cars (but also american Greyhounds) and all of these vehicles sported speeds between 70-100 km/h.
The Sd.Kfz 233 had 8 wheels, a top speed of 85 km/h, the 231 a top speed of 100 km/h, all 8-wheel versions of the series (231, 232, 233 and the 263, all were 8x8 vehicles) could change the movement direction within 10 seconds and could then go backwards with the same top speeds. That enabled the tank to peek, like you suggest, and disappear again in no time. A derivate, the 8-wheel 231 (Fu) was a radio and command vehicle that was equipped with the star antenna in 1942, instead of the old frame antenna, for extra range.
The Greyhound (M8) could go 97 km/h on roads and around 48 km/h off-road, if I am not mistaken. Some of the British scout cars reached similar top speeds, iirc.
Yet, in the game, quite some recon elements seem to have one or another vehicle in the pool that slows the whole unit down (say within a recon Coy), so such units can't reach road speeds of 100 km/h
Aerial recon would also be a nice addition. This could be abstracted and probably implemented as an air strike (instead of placing a strike, it would remove the fog of war within a defined view range, where units in woods would not or rarely be spotted, and where spotted units in the open would carry the "excellent"/"current" intel tags, or maybe even implemented as flying unit, that can be controlled by the player, and that has to return to the airfield say after 1 hr - to refuel - and which can be attacked by enemy MG/flak units.
I have wished there'd be proper ground Recon, spotting, long range observation (eg. from a mountain top), aerial recon and off-board artillery (navy) capabilities for years already.