In a way i feel it might work but rev sort of have a few things going on lile energy management, wpn cooldown, legend swap and cooldown on skills if they insist on the switching of utilities then now it adds another thing for us to manage. In the long run people are going to think even if they enjoy the lore and profession if they are not doing better than other profession despite doing so much they might just drop this espec entirely. Imagine you do so many things while playing but you are not doing nearly half as good as renegade and other profession espec not saying it won't as of now.
Given how limited time they have now i think they could just split the utilities and on f2 just do something like a shroud and maybe call it mist shroud so you take form of which ever legend you choose to add more survivability to the vindicator spec(well i jist throw in this random thoughts on mist shroud when i am replying lol).