Use more logic CSS classes

Today I tried to change a few things on my board look :
1) Use larger font for topics titles only, on forums index and search results.
2) Use smaller font for "Last action", on forums index and search results.
3) Change forums titles color, on board index.

I thought I could do this by overriding a few CSS classes definitions, such as "topic_title", "last_action", "forum_title"...
But in current default IPB 2.2 templates, "logic" CSS classes are not used everywhere so it's not easy to change board apparence without changing multiple HTML templates. General classes such as "row1" or "row2" are used for multiple purposes so we can't use it to change a specific thing.
If you plan to release new templates, it would be great to have such CSS classes :)