I cannot stand 10-49 on my healers (have a 26 imp and 35 pub) mainly because when you call an inc the whole team leaves the node and you pretty much just swap nodes all game. All I see are maras/pts/snipers I think I have played one game this week with an actual tank who actually used his guard on me. Also my biggest issue is no one taunts or uses CC's or breaks them.
I love it on my Operative healer (lvl 24). You'd have to play more adaptive, you can't just sit your butt on a node, scream when people come then be dissapointed at your team.
Use your skills to heal them instead of solo guarding things and you'll win with pure muscle instead.