may i ask why you (and Others) see the raketen as an inferior atg? for me it is in line with other atgs and in many cases thanks to the invisibilty and ability to retreat it can do things you can't do with other factions.
60 range and reverse > cloak and retreat
You don't need a cloak when you have a 60 range atg that is good as cloaked when firing from the fog.
You also don't need to retreat when you have 60 range and can just reverse away from any advancing troops.
Retreat also makes them easier to steal.
Retreat also works by the crew moving closer to what it's running from before it turns around to run away.
Also it's high ready time and it's fence post attracting projectiles. Someone correct me if I am wrong but the projectile will always hit objects if they are in the way.
Oh and until hold fire while garrisoned is ever fixed, garrisoning a raken is kinda a noob trap.