if you mean the fee for converting EUR to USD on TransferWise then 0.329% doesn't sound that bad and I doubt it could bust you unless your strategy has super low margin and you work with huge volumeIt won't work, the exchange commission will wipe out the profit margin.
Use kraken to deposit USDT and convert to EUR. Withdraw EUR from kraken to TransferWise (allowed) and convert to USD.
I don’t know how about of withdraw, but I can't charge Kraken account by transferwise. TW blocks transactions to Kraken.
They block deposit but don't block incoming transactions from crypto exchanges - ask support, you'll get this answer.
Kraken absolutely DOES usd withdrawals (it's a USA company after all) via Etana custody and their own OTC desk (100k min). Money will be sent from legit USA banks. I can only say good things about them really.