A light 45 or 50mm gun and more armor then most br2 tanks at up to 80mm. choosing one of these as a br2 event vehicle would be a great way to help low br germany. only the AusM Panzer 2 entered production making it the best choice. limiting it to ap shells would allow it to dominate at warfare at low br without bullying infantry. The mgs would allow it however to deal with infantry making it a solid br2 choice. Panzer II variants/Bergepanzer 38 (t) mit 7.5 cm L/24 - #2 by Kriegerfaust007-live *
that was the intention none of them are in warthunder i think? you can always add a second choice by posting a comment below, or even multiple including all of the above but given there are four tanks and you could choose 2 3 4 tanks the combinations would be well a lot
I feel like Panzer III L could fit a similar role and it actually seen mass production too.
Do like the late war Panzer II though, its a magestic machine.
I used the crap out of Luchs in Heroes and Generals, it has little armour (30-20mm) and only a 2cm auto cannon but with its high speed and interwheel roadtracks acting as natural stabilizers its a high speed terror box of unpredictable ambushes and balls of steel.