In other game systems I purposely look for ways to beat the meta to help make sure the entire game doesnt turn into one big battle of everyone using the same armies.
Do you mean that you look at what most other people are playing, and then try to do something else to show that you can be successful in different ways?
If so, then I think that is a great approach.
Generally in a way yes though I admit I dont use the 'weakest' armies on purpose.
When I started this game I was at a convention and saw loads of people walking away with the boxed set starters and I didnt know what to choose.
One of the creators mentioned I could use only animals, and I was sold. I figured they would be not so competitive but probably tough in combat at least and more rare to use. At least locally, they are rare to use primarily but they actually are pretty tough too.
I also wanted to build an army without Ludus benefits to see if I can just pick guys I like and still succeed.
Basically in most games I will use the top combinations to compete but love trying out new things. If the meta in a game is shooting armies, I try to defeat them. If its magic, I try to stop magic etc.