First, let’s address the fact that adding more equipment would convolute the game more than it already is. So this may be a hot take, but I think bounty equipment should be replaced by this new experimental equipment (whether or not that should make it purchasable would be up for debate). The middle ground between standard equipment and improved equipment (bond) in the form of bounty equipment isn’t really necessary, as the differences are barely noticeable in most cases anyway; plus it makes equipment redundant and IMO boring. So making the next best alternative to bond equipment, a standard equipment hybrid, could bring a lot more variety to tank load outs and be much more valuable.
In other words, make the middle ground for equipment share the same values as standard equipment while being considered a mashup between two kinds. One caveat I would like to add to these types of equipment should be that they’re not able to be equipped with reward tanks (looking at you chieftain/279 e) and to a larger extent, premium tanks too. This would allow only tech tree tanks to use these to strengthen their weaknesses/strengths to be similar to or at par with reward tanks/premium tanks more easily. This lets regular tanks have a better chance at fighting against paying customers/highly skilled players.
Equipment like this would tremendously help tanks that feel like they need 4/5/6 total equipment slots to remain competitive. Tanks like the Cent AX would really make use of this.
Let me know your thoughts.