4 uplink mikrotik design

Hello Everyone,
We have 4 uplinks all using BGP to connect and 8 ppoe routers.

What is the best solution in this scenario?

Using one core router or any other solution please suggest.

Thank you.

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Hi!! Can you please help us with a drawing for that solution? I’m wondering if all of those PPPoE Servers are directly connected to the core router and you’re using iBGP as routing protocol between those routers??