For all the coins ive ever minied, ive always use a core wallet. Im not familiar with Electrum and not happy about having the walet store the coins outside of Trezor even if you supposedly can't get to the keys without the Trezor hooked up. I still thinking that having to have a 2-step process of managing an Electrum and Trezor together seems more complicated than just doing it on the Trezor directly.
Will Trezor be fixing this in upcoming hardware and if so, do I have to buy another Trezor to get that to work when the finally get it working?

Yes it's been a number of years, I skipped the bear market and just started mining again in December.