[2019] Defeating an Ancient Ash Titan should be worth the time it takes to take it down

Yesterday I found an Ancient Ash Titan in free play and spent the time taking it down solo. Mind you this was on normal difficulty. However after the battle all that was dropped was two common items. Now I'm not asking for epic gear but it was not rewarding after that long battle to receive two common level items. At least one uncommon item or a rare item would have been nice. Next time I see a Titan I won't be stopping when normal mobs drop the same level of loot.

EDIT So one thing that came from that applies to my situation but I did not know about at the time is the "enrage" mechanic. Obviously I didn't know about this and after failing that at the end of the battle I understand the underwhelming drops. However this led to another point. There are a number of these mob mechanics that are not currently explained. I think having a cypher in your ear allows for a great way to explain to a (new) player helpful information about a mob they may have not encountered. Like you do'nt need to spell out how to take the entire encounter but if there is a non-obvious mechanic such as the ash titan's enrage it would be helpful to the player to know why they had an underwhelming result at the end of the battle.

Anyways thanks to everyone who put their 2 cents in and explained how ancient ash titans work.