Attatchment Introduction Issues

I liked the Flash Comp when it launched, but was somewhat frustrated when it was unavailable of about a dozen guns, and remains so. Equally I was curious about the Buffer they are adding with S3, but have become actively annoyed by the seemingly arbitrary way they haven't added it to some weapons. Except Snipers (which I can understand not adding it to) every other weapon class has at least one weapon which has access to the buffer, yet none have the buffer availabe across the board. This selectiveness is most evident if the fact it is unavailable across EVERY belt fed. The most confusing thing is that it is unavailable on both some of the highest and lowest recoil weapons (TR7 and KORD) whilst generally being present on the middle of the road weapons where it is likelt to be of limited use. It just feels like they have added it with no thought to where people might actualy use it, and for 5 points, I imagine that it could have seen a fair bit of use on higher recoil weapons just to visually settle them. I'm not asking for attachments to be available across the board, but at least keep them class consistent, otherwise building similar guns the same for personal comfort becomes increasingly difficult as these small differences stack up.