If you love your machine, keep it.
I used to work as an engineer in an equipment industry (not sewing!). I have tested "new, improved" products and they are not always improved, if you know what I mean. I have found this to be true for sewing also - I have an expensive-ish Viking machine and a vintage Singer 15-91. I do my piecing on the Singer, as it has a much much better straight stitch. I am keeping the Viking for its fancy stitches... but when I sew with Viking on the frame, I find myself wishing for something with better tension regulation for FMQ.
If you re-sell the Bernina, you will get a depreciated price for it. Just like selling a used car, except maybe more depreciation. How long will replacement machine last? If the electronics fail in 5 years will it be repairable? I am all for keeping what works.
If you want more (larger?) embroidery functions, maybe sell your embroidery module and buy a newer, bigger embroidery machine. (non Bernina to reduce the total cost)