You have to see that its a split-cost card. If the üure cost would be recuruits only, then you would be right. But as its stated right now, the condition is needed to make it a reasonable card even with the buff.
I found this card beeing one of the more powerfull cards in the mage/legend deck among the uncommons, so i don't think it need really a buff. Probably an "else" possibility like a gem gain would make the card more usefull for rush decks. But i don't think that rush decks really need another card at their disposal.
Compre with Reserve forces for example. It costs more but has two modes, qhile the unicorn got the legend keyword. A free facility is nothing to scoff at.