Not to sound rude, but these skills sound horrible off the bat. As someone who mains Bard I would never lower my hp to regen someone, that is the complete opposite of support, same with your suggestion for a resurrection, it would eliminate the need of a healer. If Bard is to be fixed, which it does, they need to remove the cast bar and revert the class back to pre expansion. Add a tp bar to the party display making Paeon useful, expand stat buffs with defensive and attack based songs and add a song that does minor hp regen WITHOUT sacrificing your own. Then Bard will be better and more rounded.

As for Machinist all they really need is a damage buff, less RNG based attacks and the ability to use different types of turrets, similar to summoners Ifrit, Garuda and Titan summons. Maybe instead of focusing on buffs like the Bard, the Machinist could focus on non damage dealing debuffs.