[d3Xt3r]

I reckon your best bet would be the Unihertz Jelly Star[1] - it has a 3" screen, which is comparable to your old HTC Hero (3.2"), and you can run a LineageOS GSI on it. Oh, and it has a programmable hardware button, 3.5mm jack and a frikking INFRARED PORT to control TVs etc!

Sadly no trackball, but no modern phone has one anymore.

[1] https://www.unihertz.com/products/jelly-star