The main issue as you know and as so many mentioned is the lack of steel. It's nice it takes only 3 cards to merge. The 175k steel isn't easy to come by.
Steel is hard to come by, almost no dr waltz cards, I refuse to buy diamonds since cpw won't reimburse for their own issues. Honestly game is losing its appeal.
Once steel was only used for railway lines so once you had them all laid it was useless. Then you brought in Wranglers and these were good guys and you could use the steel to merge them - all was good. But then steel was needed to merge for legendary -10k OK for slingers but 220 for mercs 88 hours of production. Balance now wrong either significantly reduce merge amounts needed or up the production capability
Comments
And I have no trouble whatsoever stealing the needed steel for them
Steel wasn't easy to come by in the west. I guess maybe that's why it's this way. It takes patience