Hello,I've been a fan of Halo3 multiplayer especially Big Team Slayer and Objective and Heavy since 2007. I tried many games but HALO3 is the best for me. Loving H3, when Halo3 ODST was released, I naturally bought it, having hopes the Multi would be similar to Halo3 (arena type) but it wasn't so I was kind of disappointed and went back to Halo3 although the BTB list was getting more empty I still could play 4v4 social slayer quickly.Halo4 was then released. Once again, I believed the Multi would be a newer, better version of Halo3 but I was disappointed that the Multi was not Arena type but ability type where you build your spartan as in COD. I don't like flying and sprinting etc... For me H3 had enough speed in the numerous vehicles, and the on the ground duels were top notch. So I went back to H3 social slayer 4v4 which worked perfectly.I then bought Destiny by Bungie thinking that the original makers of Halo would necessarily have a Multi similar to Halo3, aka Arena, but once again, no. So that's 3 games I bought from Microsoft SIMPLY looking for a BTB type Multi as Halo3. So I went back to H3 social slayer. A few months ago, my 9 year old 360 broke down which was fine after 9 years. In August, I bought thermal paste to fix the 360 but then thought that it was about time to buy the new Xbox One with Halo MCC which did promise Halo3 as in the "old days" with BTB. I got a new TV set on purpose and confident that this was the "ONE" (no pun intended), got the MCC bundle. I got eveything set up, downloaded the MCC for 4 days, last night I finally get to 100%, click the multi and bam, I get the pop up "downloading Mactchmaking data...". So I can only play Campaing which is useless btw as I have all 4 Halo Titles on the 360. I only bought it to play BTB H3.So this is the 4th disappointment with the series. I can't really tell you how I feel about the whole Halo franchise, as I would get banned, but I am utterly appalled at what's happening. I tried all the troubleshooting available on the internet, didn't see any responses by 343 on this issue. So I am stuck with a new game with a multi that doesn't work. With all the threads on MCC being buggy, I was expecting some issues but not a broken multi altogether. I hadn't read any threads on this "matchmaking data" bug until I googled it or wouldn't even had bothered (would you?).Then, I read that H5 was due in November with promises of arena slayer and BTB. Rumors go that 343 are concentrating on that implying that MCC bugs aren't their priority anymore. There is also the hope of the retrocompatibility of H3 and other games in "november" or at the "end of the year" but will it work? Will MCC ever be fixed? Those are way too many questions that are not answered and honestly, I have lost faith in any Halo games after H3, how do they expect me to buy a 5th game after the first 4 didn't give me the simple game that I expected and paid for. Why call it Halo if it is not Halo? I will thus return my xbox one tomorrow, and just fix my old one with the thermal paste and go back to playing H3 social slayer which is getting old after 10 years but at least works. I am not ranting on 343 but wish they had just made a simple BTB and slayer (K.I.S.S. anyone?) I read that they were pressured to releases Halo MCC by Microsoft and that it is not their fault but frankly I could care less whose fault it is, I paid the money and have bought all the Halo games just to be disappointed 4 times. Have a nice day!