I think we may be talking at cross purposes, lol. I mean that those roller modules specifically are "gambling" in that you take your chances when you use them, you might get good weapons or you might get bad ones. If you are one of the few people who like to gamble like this you might like to use them and feel that the rewards outweigh the dud weapons created, if you don't like to gamble don't use them, use the regular drill kit damage modules instead when you can find them at outposts.
It's probably not a thing that they will "fix" as those modules are functioning as intended. Modules being common/uncommon/rare/epic doesn't mean that they are necessarily good ones to use for your individual circumstances, it just means that the numbers are higher. for example I have two T5 damage drill kits, the uncommon is a flat +70 damage and the rare is a flat +85 damage. Or a T7 uncommon lens kit might give 24% chance of crafting a higher tier item, but the t7 rare lens kit has a 26% chance.
I'm happy to forward your feedback about modules in my next report, if you can tell us what you think the changes should be--the more exact the better, like "they should reduce the price of (x) to ½ the existing price" or "i want to buy specific modules in game using game currency"