I understand with Klingberg from the POV that he's coming off a major surgery with little to no time to try and get stronger over the past two summers. I think they want him to get a head start on training, and I believe he actually mentioned that as well. He wants to get stronger, but he doesn't want to add too much weight.
Jokipakka doesn't make as much sense unless you view it as a development decision rather than what best helps you win. Looking at it from a development POV, I realized they're probably leaving a spot open to give Bystrom, Backman, and Lindell an opportunity to get some games. Lindell, if he can come at all, will likely only come briefly as he's almost a lock for Finland's WC team.
Texas already has Fortunus, Gaunce, Honka, Mangene, Meech, Valentine, and Wrenn. Right now they are rolling with:
Meech-Fortunus
Gaunce-Honka
Valentine-Mangene
Oleksiak has played with Gaunce lately, and Honka had played with Meech while Fortunus was out.
We already know Bystrom is coming back, and they could add Oleksiak at any time when D get healthy. Nemeth is eligible to return at the conclusion of the NHL season. Backman has already mentioned in a Swedish interview after the trade that he wants to join Texas in the AHL at the conclusion of Linkoping's season.
Valentine and Mangene are free game to come out for actual Dallas prospects. There's no way Honka isn't in the mix. I don't think there's any chance that Meech or Fortunus sits either. Gaunce is fine, but I hope they'll be willing to sit him. IDK that happens though.
That essentially only leaves 3 spots for Nemeth and Oleksiak and the three Europeans coming over: Bachman, Bystrom, and Lindell.