SE must be drunk.

[Reynhart]

At least doing good DPS requires a bit of thought and is more exciting as a goal than not being dead.

Then play a DPS. Why do you even play tank if you find tanking boring ?
What may seem boring to you can be interesting for someone else. Why should this game only reward one type of tank ?

The problem with parry at present is that it's a constraint stat, but there's no required parry threshold to clear an encounter.

Maintaining aggro is a constraint, surviving is a constraint. Tanking is a constraint. Why do you think so few people actually enjoy that role ?

The only problem is that the two basic aspects of tanking are too easy. Instead of pushing DPS, they should balance combat so that maintaining aggro and surviving require skill. At least, you could shine as a "Tank", and not as a would-be DPS.