If you like the Hissho get the DLC.

The Behemoths are window dressing and very easy to miss in games on the regular.
They have a pretty niche usage, getting extra strategic resources, destroying systems, building special improvements.
You can only get a certain number of them that get increasingly expensive to maintain, they feel kind of clunky to me and you have to get specific techs to get them so unless I really need a specific niche utility I often just don't bother with them.

If you like the Hissho get the DLC. The Behemoths are window dressing and very easy to miss in games on the regular. They have a pretty niche usage, getting extra strategic resources, destroying systems, building special improvements. You can only get a certain number of them that get increasingly expensive to maintain, they feel kind of clunky to me and you have to get specific techs to get them so unless I really need a specific niche utility I often just don't bother with them.