Nah. Every Halo game has had at least one issue that keeps it from true and utter perfection.
For CE is was the very repetitive level design. Just copy and pasted rooms.
For 2 it was the cliffhanger. I was left so frustrated when that ending appeared because I was totally ready to finish the fight.
For 3 it was the gameplay. So many issues (slow thuggish movement, horrible hit detection), etc). Also had a very bad netcode too.
For Reach the issues become a more serious. I for one despised armour abilities, Bloom was annoying as fuck, I didn't like how they retconned so much of the books (still loved the story nonetheless).
Unfortunately 4 has a lot of issues. Almost the entire multiplayer sucked, Forge was a shell of its former self, campaign mission design was linear and boring, art style change was completely unnecessary and the story's dependence on expanded material sucked.
Oh Jesus, The amount of god damn issues I have with Halo 5's story could be its own fucking novel. I'll very quickly sum them up :
The story was absolute shit. I can list about 30 reasons as to why but I'll leave that for another day.
Theater is broken
BTB is the worst iteration yet
Multiplayer focused way too much on the competitive scene.
Even more of the artstyle changed
Req system sucks
Warzone was fun for like 4 months but had so many exploits people took advantage of that nearly every game is lopsided and snowball'y.
Armour customisation is at an all time low since Halo 2
UI is lazy
Game launched with half the content of Halo 3 and it took months (even a year) for everything to be added back in.
Aiming is incredibly broken
No earning armour just get lucky in a random gold pack
Who the fuck knows how many scout hog variants
No Oddball, No KOTH, No Juggernaut, No Invasion,No classic Firefight.
Arguably the worst map rotation in the series.