If you’re open to yet another SRS jpdb proposes to teach the kanjis through sub-vocabulary and thus you cut time on creating cards (but customizing them is still a thing).
Also as @simias said semantic-phonetics (can have them through the userscript [Userscript] Keisei 形声 Semantic-Phonetic Composition) helps to diminish the cognitive strain for some kanjis.
As for being overwhelmed with branching content I have no easy answers, I find that in the long run the deeper understanding of the radicals etymology the more it all makes sense so I like spending time on the sub-component and kanjis but it is very time consuming.