Does the upkeep bankrupt you? If so then it'd be a funny noob trap.
No. Ship upkeep isn't that high in Stellaris and I always focus on the economy. That thing used half my force limit, though.
In any case starbases are the main obstacle early game and a titan would basically delete them.
Indeed. At that point starbases were still <= 2K in strength and that ship alone has a strength rating of over 6K. Needless to say that early game starbases get completely annihilated by it.
And a titan is still probably decent vs. destroyers.
It was very decent at mopping up all those 500 to 1K strength neutral mobs who were blocking my expansion paths (yes, I got it that early in the game). E.g. the Tree of Life protectors (1K mob) managed to do about 3 points of damage to it before being blown apart.
Hopefully they won't nerf this. It was hilarious.