Guild Wars 2

Honestly, nobody really specs for +healing and toughness needs a little help, if Toughness/Healing were the same stat, it would bring toughness in-line with other stats, and honestly, healing more does make you a bit tougher.

Your forgetting how god like that would make guardians.

with 600 healing power, it only increases heals from 5k to 6k, it would make everyone a little better.

Why merge two separate stats?

If they need tweaking, fine. But there is no point to merge them. None that I can see at least.