Which parts do you want to be modify?
If you're talking about the wallet, I think it is still possible. But if you're talking about how the systems work, I don't think it has enough justification to do so. Just because it makes "newbies" hard to understand it for the first time, should we simplify it with a security risk?

In the Bitcoin network system, information is irreversible, non-deletable and modifiable as long as it is confirmed by the block!
If this information is wrong, you can only recreate a new message to reverse the wrong information!

It is impossible for modification in Bitcoin system because Bitcoin can not be controlled.

What part are you  not able to understand ? Since there are many others who have understood all the basics, you should reconsider your suggestion.

It will not work, because the bitcoin system is already running automatically and can not be changed anymore. Although it can not be modified, but bitcoin can still be changed to be more friendly again by making a bitcoin exchange site is quite simple, but it must also be made ATM bitcoin.

I don't think the Bitcoin system or platform is difficult to navigate or use. Anyone that already understands how to use the computer or a basic knowledge of it can actually use the system effectively. Although, no technology is unique or ideal, there might still be some little improvements on it maybe in making the transaction faster during network clogging.

What difficulties you are encountering that makes you cast doubts on bitcoin?

It was designed that to be complicated or are you digging up on technicalities that it becomes to complicated to you? The wallets are very straight forward and easy to used that even a beginner would have understand it. As far as modifications, on the wallet side, there are a lot of them coming out with design that is very easy to understand. Send and Receive address is there you just have to fill in the gaps. So I don't understand what difficulties you have seen to draw conclusions that modification is needed.

to modify the protocol can not because it is unchangeable that is why it is good suddenly the only thing that can change the speed of the confirmations but it is really easy with a phone you can easily pay that is more friendly and it is the rest just study a little and learn

Blockchain is a decentralized system and I find it very difficult to modify the blockchain system without the direction of the developer. But I do not think there is anything else to fix on the blockchain system and I have been comfortable and easy to use and there is nothing difficult to use bitcoin to transact etc.

I don’t think bitcoin need any modification right now. It was actually a user-friendly interface as well as a good system. What I can expect new and better technology in the future.