In my opinion - raising the fee on making a token would be counter intuitive. If it's raised too much, to say 100 Waves to make a token, and then the price of Waves increases in real dollar amounts, the cost of making a token will be way too expensive.
Imagine if Waves was $5.00. That 100 Wave fee would become $500 dollars. That's prohibitively expensive for the hobbyist non-ICO programmer / person who wants to start a project. Waves is a blockchain tokens platform for the people after all.
It's better in my opinion if we instead implement a filter/favorites function - that also incorporates verified assets (green check mark in DEX). By using the filter, any non verified / non-favorited asset would disappear from your asset list. To see them again, just untick the box.
In the future, WavesCommunityToken (WCT) could be used to help decide which assets are to be 'verified'. That way it's not necessarily only up to Waves Team discretion as to which projects are of merit for this type of greenlighting.
Anyway, this way you can still receive airdrops that may contain valuable tokens, and you won't be hassled by 'spam' tokens.
Also, burning tokens solves the problem, and costs a marginal amount of Waves. You could visit a faucet and get enough Waves for free to take care of 10+ transactions.
Just my 2 Waves
- ripto