Try not to judge a synth by its presets. While an electribe 2’s presets may sound more polished and ready to wear out of the box, that sound will wear off once you try to go deeper into sound design.
A4, with its (all p-lockable) feedback osc, neighbor osc, pwm, sync, and sub-oscillators will keep you happy for years and years of synthesis.
On my A4, I typically dedicate one track to drum and bass, which it does but I can see the Rytm has a better way of muting individual drum parts - possible on the A4 but only by turning off trigs, not ideal.
I could stick with the Electribe 2 for drums - it does have 16 pads (24 note polyphony); I must try that out.
Have you considered a Nord Drum for your A4? You can sequence it on the CV track via the 4 CV outputs. All 4 outputs can send a note/trigger at the same time too, so there’s 4 more drum voices with either ND1 or ND2. ND1 goes for about $150-$200 lately.
Send the ND audio output back to the external input on the A4, and then use the FX track for p-locked FX sends and pans of the ND.
I was right there with you on the Analog Four, feeling very limited by the 4 voices. Then I added the ND and it really opened things up. Best of all, I was able to keep all 8 voices on that one Elektron sequencer.