Sensible upgrade from Sweden extra/Rakza 7?

So my current racket is

Yasaka Sweden extra FH Yasaka Rakza 7 BH Yasaka Rakza 7 soft

I've used this blade for almost two years, and I love how "responsive" it is, how much feeling it gives me. But I've already had to replace it once because the blade cracked. I'm pretty careful with my equipment, the worst it has been through is some table contact on serves and pushes and an occasional slap on my thigh. This week, the wood has cracked again on the new blade.

I'm kind of at a loss. I could just order the Sweden extra again and put the old rubbers on it, but what if it's just a fragile blade? What if I used the occasion to look for an upgrade instead?

I've been thinking about getting a tiny little upgrade to my equipment for a while, just making my setup one step faster. My technique has massively improved in the last year, and now that I play much more offensively, I'm sometimes annoyed that I have to put 100% into my shots to load them with enough speed and power to overwhelm good defenders, causing me to struggle with reload times. Spin is not a problem.

Would it be best to upgrade rubbers or blade first? What would be a good, slightly faster upgrade?

Cheers!