You know, the way they resolved the whole mystery cloning experiment thing felt so inconsequential, it barely even registered to me that they were also resolving the entire Grogu DNA/science experiment plot line going back to Season 1. It came off like “Oh crap, there’s an army of force-wielding Moff Gideon clones and… oh wait, nevermind”.
The writers clearly implied there was something more going on earlier, because when we see those clones in the tubes in earlier episodes, they looked very deformed, obviously hinting at some proto-Snoke thing going on. I’m pretty sure the writers really had no idea where they where going with this. But if they couldn’t think of anything more interesting than just “more Moff Gideons, but with midichlorians now”, they could have at least tried to come up with something interesting to do with it, rather then just unceremoniously killing all the clones in 5 seconds.
Here’s an idea: how about an “Indiana Jones” style ending, where the villain’s own attempt to achieve power ends up backfiring in some humbling or moralistic way. Let’s say Gideon unleashes his army of Force-wielding clones, but soon learns it is unwise to mess around with the Force like that, as the clones immediately become insane and kill Gideon, and then kill each other. That would at least feel like a somewhat interesting outcome to all this, rather than yet another “generic fight sequence with final boss”. It’s kind of like when the bad guy in Indiana Jones finds [mystical artifact] but is deluded by a lust for power and so misunderstands its nature, and thus ends up melting/exploding/disintegrating/etc.