Any possible means to minimize the high rate of transaction fee is buyable and I don't know think if both whether Short term or long term bitcoin Investors will internally choose to pay high fees when there's a medium to minimize the cost.
But guess what!!!! Right about investment like this, aiming on how to pay lower transaction fee such as to have your funds in the centralized wallet exchange in other to cut the transaction fee is not a primary aim but how your assets can be hold safely right in the wallet.
I believe we all know the risks and implications of having our bitcoin assets saved in the centralized exchange? If you don't hold your keys, then it's likely not your coin meaning there's Possibilities by which investors who have their funds on the centralized exchange is liable to lost them.
Hackers can invade, you can easily lost access with some tendencies of unrecoverable so as much you can be situated on the right target for the government to have you on track.
With all being detailed I hope we understand the risks on exchange?
Sometimes ago I read on this related topic in the bitcoin local board
Short term investors feeling cool with the centralized exchangeThere we can as well read similarly on others opinion on this same short term Investors having their assets on the centralized exchange wallets.
So to me it's not how quick and urgent you want to sell your coins that should prompt you to have your funds in such centralized wallet.
It can take a minute of time for hackers to invade your wallet while you hope to sell that coin in the next hour.
My advice is that let's not take out of greeds not to pay a specific service fee and get all those valuables lost on the way. It's important to have reliable security source than going on security terms of roaming agents hunting to hurt their victims.