Bitcoin transaction is very slow, i send $20 of bitcoin to my another wallet and even after 2 days of waiting it doesn't seem that it gets confirmation and until now i'm waiting for that transaction to confirm because of my expenses that badly needed to pay as soon as possible.
This type of problem can be a factor why bitcoin is not getting the 100% of interest of other people since this confirmation time can be a downside and turn off for future investors, I hopes that this problem will be fix and the transactions will be faster than now.
The monetary value of the transaction is irrelevant, if the size of the transaction is too big and the fee is too low it may take a lot of time to confirm the transaction if it gets confirmed at all.
I still not understand what you want to say here. If the size of transaction is bigger, we can expect that more transaction will be added to a block and more transaction will be confirmed.
Nowadays, we have witnessed a hundred thousand bitcoin transactions can not be confirmed. therefore, increasing the blocksize is the best idea