The way v3 works with concentrated liquidity makes it hard to see how many tokens you need for each when you want to invest e.g. $3000 - you kind of have to just keep playing with each token field to reach the total amount in USD that you want to invest. It's fiddly.

So it would be easier just to be able to enter a total amount in $ to invest, and have it automatically calculate the required tokens for each pair.