Merge projects

Well, some good units have ‘unique’ stats that are specialised to do certain things. Like for instance, Effie is popular to merge due to her horribly high attack. I think it’s great to start a merge project as you can get higher to higher arena tiers, if you don’t care about arena then you don’t worry about merge projects. Merge projects don’t have to be used for arena score you can merge your favourite units. Sometimes you can complete GHB/LHB/BHB’s with merged units. Tbh, I merged the units that I had most copies in my barracks and they turned out to be very very tanky.

It's all subjective and up to preference. Merge projects don't necessarily have to be arena focused either and could be favorite units of yours.

It's all up to whether you think a unit is worth the investment.

You do absolutely nothing until the update happens.