The recent event introduced new variants of existing companions, namely consumed variants. I absolutely love them.
What I don't like, however, is that the variants based on retired companions are not available because they are "too strong". Considering the fact that the devs have 100% control over the stats of a companion, it feels very skewed to use that as a reason for not making them available. If they are too strong, simply nerf them. Edit to add: I never thought to check the stats in the companion overview. They have the exact same stats as the originals, so clearly they are not too powerful. Why would only KS backers be allowed to have powerful companions at their disposal? This makes reason 2 mentioned below all the more important Make them available for the community. And I say this for multiple reasons.
1. The original exclusive companions are already pretty impossible to obtain. Especially in the long run, the closest most people will be able to get is to get a colour variant. Now even that is made impossible.
2. Companions are more than just pretty pictures. Rarer companions give far better rewards for a lot less effort, and they are used in battle. They often have unique stats, synergies and abilities. We are already noticing now that the KS krane is absolutely vital in progressing far into the icerun gauntlet. The majority of the community is hard-locked out of progressing further because the KS krane is kickstarter exclusive, and there is not even a consumed variant to buy as an alternative.
3. All companions are listed in the companion overview. To me it makes absolutely 0 sense to have an overview of all companions that includes companions that are 100% not available to get in any way shape or form. These types of games often attracts collectors, myself included. I hate the idea that I will never have 100%, not because for my lack of trying, but simply for the fact that they have not been made available. It's worse than dangling a carrot in front of a hungry donkey because we will never be able to get them.
So long story short; make the boss and exclusive consumed variants available for purchase.