I don't mind the map re-use. We can't realistically expect them to create all new maps all the time for these things. That would be far too much development expense. If they did that they'd have to charge for them as DLC like MW3's "let's release one specops mission with each multiplayer map pack". Screw that.
HALO:MCC >>>>>>> Interested in Online Customs, Squadmates for Ranked, and Co-Op Campaign. I am on 6am-4pm GMT on my nights off (Midnight-10am US Central). If you add me do it on XB1 please; my 360 friends list is nearly full.