Good Hardware to Combo with PO Modular 400

So I was thinking the other day what would be good to combo with the PO Modular 400. Here is the list with my thoughts.

Good Combos

- OPZ + OP Lab - Pricey for sure but it does make for a great combo. You can use the PO Modular 400 as another voice that can be heavily modulated while playing live. Also makes the whole unit portable.

- Arturia Keystep - Has a good sequencer and makes the PO Modular 400 "Playable" with the keyboard with cv/gate outs. Affordable and can be used with other gear easily.

Other Combos

- (Preliminary) PO Modular 16 - Depending on all the functionalities I still see the POM 16 as a decent combo. Makes the POM400 playable and i'm sure anything is an upgrade over the actual sequencer module that is in the POM400. Hopefully there are ways to program songs/patterns. Makes you wonder why they didn't put the POM 16 sequencer in the unit in the first place like the POM 170.

- Any semi-modular synth.

Minibrute 2s or 2 - 2s offers an upgraded sequencer while the 2 with the keyboard makes the POM 400 playable.

Mother 32 - Better sequencer that the POM400.

0 Coast

Behringer Neutron

- Secondary Eurorack Build - This would probably be the most expensive but given the utilities you already get with the POM 400 (2 x VCA, 2 x Envelope, MIXER, Filter) you don't need much else eurorack wise because you have the basics. I think you could maybe just get Maths or a FX module that would add a lot for your buck.

What are your thoughts curious to hear!