The engineer was the only class I was never tempted to even try. I don’t particularly enjoy the skills aesthetic and the kits mechanic.
But the holosmith seems like the best reason to at least try and play one and I think it’s awesome and good for the class diversity. So congrats to the design team for that.
Also, I should say the holosmith mechanic reminds me of the bright wizards from the now defunct Warhammer Online. Had the same high risk – high reward thing going on (though is was mostly negated by having a dedicated healer in PvP scenarios, but that’s a different story 
)