I find it pretty easy most of the time to tell what's a hologram and what isn't personally, which is pretty useful. I thought they were going to be horrible to deal with. Had some fun with a guy today on Reflection who absolutely spammed his hologram like it was the be all and end all tactic of Reach, if he saw me coming (I assume he was doing this to other people as well) he would frantically run backwards around a corner and then send his hologram out like it wasn't blatantly obvious what he was doing. The best part about it was even though he apparently abuses them like there's no tomorrow he had no clue what was a hologram and what wasn't. Whenever I saw him I'd let him go back round and send his hologram out, wait until it came past and then send mine running past it and he fell for it every single time. Easy kills.

Also think Reflection is probably my favourite multi map so far, thought I wouldn't like it at first but it's been pretty kind to me so far. Reminds me of Timesplitters.