What's so difficult with Gbyte units? The coin's value is btc/gbyte, you'd end up dealing with larger numbers using MB and smaller fractions of btc when trading... and some exchanges have a minimum btc value for trading, (Trex is 100k btc sats) minimum per trade.
But if this is changed to Mbyte, where right now 1 Gbyte = 0.05 BTC,
Then
1 Mbyte = 0.00005 BTC
Why is this better?
dont get it either. psychologicaly its making no difference, because you get all this millions of bytes anyway
What???!
Wait a minute.. Let me say again... What?

What do you mean psychologicaly no difference?!
There are a lot of people I know in real life, who, exposed to this, will invest in what has a small price per unit, regardless of total monetary mass (the number of units in existence). You are not .. just wrong with that affirmation, you are way off!
The argument above with "1 Gbyte = 0.05 BTC" being better for trading compared to "1 Mbyte = 0.00005" is not convincing either, because the average trading size per position is around 1-2GB's anyhow (I'm speculating here based on common sense)... and there are make tokens/coins/cryptoassets with a unit price of around 5000+ satoshis and people have no major problems trading that... Also, the average joe doesn't daily trade.
One extra argument for the price denomination cut (from GB to MB) would be that standard stock market is used to splitting shares, in order to keep prices in around the same area (of two to tree digit price).