LT-432, as of May 2020
I generally wouldn't recommend that potatoes play lights in tier seven or above. I myself love lights, but my stats in them are mostly terrible.
The LT-432 is hailed as one of the most overpowered tanks in the game, and with good reason. It has actual armor that will regularly bounce random shots coming in at long range, it's fast, it's got a great gun, and despite it's size it's pretty stealthy.
This will lead many potatoes, myself included back then, to buy the LT-432 thinking you will do well in this broken OP death machine, but you likely won't.
This is because the enemy scout is likely better than you, and in lights skill is everything. The LT-432 will help you do some damage, or survive a mistake, but it won't help you with scouting positions, active scouting runs, timing, map awareness and all the other things you have to do as a scout.
The LT-432 would have been a fairly potato-friendly medium tank actually, but any potato light is a terrible drawback for a team, and your win rate will suffer as a result.
Potato score: 4.5 / 10 (probably the best light for potatoes, but no potato should drive lights after tier six).