My initial reaction to this is "ZOMG YES!!!!!!" It would actually bring skill back to pvp, players would have to use more than 2 or 3 skills all the time, and in general make things way more interesting. The only problem is I don't think it'd be that simple. If people have more health they're die slower, making it way easier to guard any objective long enough to get back up. Hell, its hard enough taking a side node in civil war already, just imagine if everyone had 1.5x the health? I like this idea, but they'd have to make all the maps bigger (not at all opposed to this) and the speeders take longer to compensate (which I don't think is so bad, though more speeder time = less on the ground time which isn't fun for anyone).
The second problem I see is healers solo guarding objectives. At least now a few stuns and a dps has a chance to solo them and flip the node. With 1.5x the health you'd need at least 2 to take anything which = less attacking/occupying their team at other points = easier reinforcement. Healers would at least need to still feel threatened that a dps can solo them and flip a node (maybe they aren't even scared currently?) or they can just kite a single dps for eternity without a care.
Oh, and as the OP's point, just wait til the level cap gets raised. Unless they fiddle with skill tress or stop giving us talent points (obligatory disclaimer that I have no idea how bioware is handling this), you're gonna cry way harder once smashers have enough points to get the 4 second stun immunity too. You will literally $*&% yourself.