now the old the on trezor is on a virgin untouched wallet what does it become down the road.
as VB has change the rules enough that I lost track of whether I have a split coin or I am getting one or VB stole some more from me an Now owes me 2 old eth + whatever.
I don't understand what you mean with 'he owes you X coins'.
Anyhow, your stake on Coinbase is not on your possession, so you will probably neither get to claim fork-coins if a fork will happen and neither can you decide what chain to vote on with your stake.
The 1ETH on your hardware wallet, would be present on an ETH fork, and you could claim it without a problem, but that doesn't have anything to do with the recent discussions about staking. Those coins are not staked. They are just sitting in the wallet. They can't be staked since you need 32+ ETH and approval by Vitalik and his friends to be allowed 'in' as a new 'staker'.
TL;DR: Nothing to worry about.