Tiki is very powerful and power require knowledge to master it.
Still your statement is true and we are trying to improve in both direction.
We (the Tiki community) are investing time and working to include in Tiki better profiles and preset configuration.
On the other hand you can also rely on our Tiki Consultants and hire one for your project or part of it.
About having icons in a menu it is possible of course.
CSS + fontawesome would be one easy win, Smarty template another... Depends your exact use case.