Btw. when the Leopard 2A7V was developed, the German Army created a document with all desirable upgrade options and then investigated the possible upgrade paths - specifically in regards to schedule and the budget. This document already included several upgrades beyond the Leopard 2A7V, such as a harkill active protection system and automated tracking function for the optics. However by the assessment of the German military no currently available systems on the market would have the maturity/tec