What do we have now? Only 3 enhancements: super string, scope and pneumatic reloader, two of them are sugnificantly better than the last one, reloader is good only with adrenaline shot because of 3 shots per turn. Anyway 3 upgrades = not much choice (I'm not counting that there are 3 types of scopes) and crossbow user usually have only crossbow as offense skill, so there is no way to use something else like guns characters, who can use pistols/SMG's/assault or sniper rifles, all with the same skill.
Please, add one more crossbow customization slot (or make a scope slot compulsory and leave 2 more for customization) and few more enhancements for it, for example, attachable
crossbow quiver, all modern crossbows has it:
If a quiver is attached - it grants extra utility slot for special bolts for example (like a belt). Also you can add
pulley system, most part of modern crossbows has it too:
If attached pulley system grants you 10% critical chance (or something else). The same with
smart module, why it's impossible to install it on crossbow if it works fine on firearms?
Game also needs a close quarters scope like collimator sight/RDS for crossbows and assault rifles/SMG's which grants +20% to close quarters precision and +10% to move and shoot precision for example (mostly like rifle barrel retractor for sniper rifle).
Upgrade crossbows please, make crossbow users happy