About test drive/flight on unresearched vehicles

Am i the only one bothered about being unable to test
Unresearched vehicles,
Leaving me with the only option of grinding for days
Just to know if i really like the vehicle,
Not even for needs but just testing them out of curiosity instead of grinding whole tech trees
Of each nation,
It could be also a useful tool to know your enemy better
Or basic training for yourself
Or whatever
It’s just must be there