My issues with Halo 5 Guardians

Halo 5 is not impressive in the slightest. I am going to list my issues with Halo 5 as well as my reasons to those issues.
Issue Number 1: Multiplayer maps are not very creative at all. There is really only two strategies to use on Arena Maps. You either stick with your team and be ready for the grenade spam, hoping to make it out alive or try and flank the enemy team from behind but fall prey to horrible spawning. The multiplayer maps so far offer no flexibility with tactics. I don’t really stand a chance when every corner is full of grenades being ricocheted off the wall.
Issue Number 2: The Ranking system is okay but not what I expected or wanted in the very least. I was hoping for a revival of the Halo 3 ranking system but was disappointed. The division ranking is honestly a good attempt to create equal match made games but sort of boring.
Issue Number 3: I have a limited choice in customization options; it’s very boring to just be able to customize your armor set, visor, and helmet. For this reason alone I found every other Spartan I encountered in Matchmaking to be very similar to everyone else. So again… Not much creativity in the slightest.
Issue Number 4: The requisition packs are in my opinion a boring addition as all I ever get are Mongooses and Needlers. Every requisition pack is spammed with these items and to be honest it was much more interesting when Halo Reach had currency to purchase armor.
Issue Number 5: I played the campaign on Legendary with and without friends and found my AI controlled squad mates to be very prehistoric. The programming the creators used is too simple. Whenever I am down and need to be revived my AI team mate will walk in the line of fire and go down as well. Also the story line is very boring, having not read the books or comics I felt very confused as to what was going on. And Cortana’s explanation of how she didn’t die in Halo 4 was rushed. The keyword from the campaign is rushed in my opinion. We visited Sanghelios and got rushed out of there with no background on their culture. Let’s be honest Jul 'Mdama deserved a better death as opposed to being taken out in the cutscene. All that hype for Jul and he’s taken out at the beginning of the campaign. I am very disappointed with Halo 5 Guardians. I waited in line for the first Halo ever made and years later treated with this game which lacks heart and soul. And the Warden of Eternal was rather annoying in all honesty. A little more of a backstory on him would’ve been appreciated. Please give Halo back to Bungie. Otherwise I have no use for this game and will be selling it.