I'm no fan of good words only, so here are my comments:
I went through your maps without bots and didn't test the playability as long as I'm short on time. First I've to say I love arena type of maps so good connectivity and reachability is important for me. If you're heading for oldschool mapstyle then don't take me too serious.
I came across the following problems in each of your maps. Walls in general are way too small/narrow so I got the slight feeling everything is made of paper-mâché. Often your stairs/ledges are too steep and narrow. You should have used more/other textures to add more details. Every map is made of one gaint box and many walls inside. If I would improve the maps I would start removing the gaint box and create unique rooms so everybody is able to know where he is at any time. I would reduce the amount of small rooms and create better looking 'standalone' rooms connected smartly.
There are performance issues, it's too open for my taste, there are unnatural walls/borders and texturing is too simple
doorways are to low/narrow, walls too thin, sprial staircase too dark, it's a small map and has too many items, ledges are too narrow I can imagine it's easy kick everybody of with a single rocket.
All my introducing concerns and lightning could be improved.
My favourite of your pack. If you remove the box-feeling and 75% of those ledges, add more details and don't have it so very open it's a fantastic "king of the hill" map.
Labyrinth type of map I imagine difficult to play. I guess Counterstrike players have fun with this one.
For me it's too narrow (all those hallways), no places for good dogfights, there is only one way up and why do I get hurt when I'm upstairs, is Quad and BFG balanced well?
Dayz, thanks a lot for adding your mappack to OA. I would love to see one or two maps improved. There is much potential.
I might be wrong and your maps are great fun to play. I just argued how they look like.