I was recently looking at my old LastPass vault (I moved to BitWarden after the compromise last year) and noticed that my seed was in my account. Although I had a pretty decent password and was doing a reasonable amount of iterations, I have seen that attackers are going after these accounts and people have been losing crypto.
That being said, is this a reasonable course of action?
Load my current seed into something like mycillium
Wipe the trezor and generate a new key
Transfer the funds from mycillium back to the trezor with the new key
If you typed your recovery seed into the keyboard (digitalized it), it is definitely recommended to move all your funds to a newly created wallet backed up by a new recovery seed. Information on how to move the funds can be found in this guide: https://trezor.io/learn/a/move-crypto-to-a-wallet-with-a-new-seed
Please, keep in mind that you should never digitalize your recovery seed (typing into a keyboard, making a digital photo, or scanning it). More information on recovery seed can be found at https://trezor.io/learn/a/how-to-use-a-recovery-seed