Is 4.26 worth the upgrade?

Ermm 4.26 its designed for full production its been said on loads of videos from unreal engine and theres in fact in progress AAA games in production with 4.26 so you do seem to speak correctly but think your a bit behind of info about the news updates and latest about unreal engine, because in fact it should be other way around for your use, use 4.25 for prototype and then use 4.26 engine for a real project but of course do as you feel comfortable dont mean to push your work to a uncomfortable way