Stronger is not a bad map, its kind of pubby, but still plays ok for organized play. I'm very suprised that rav could pull of something this good when I look at his other maps like slabotage that made me want to defecate in my hand and throw it him. Overall though, goodjob, if you keep working at it your next map should be great.
I've played in a couple Sball games on that map and it turns out okay, but I still feel like the original stronger (if it had fixed doors) is quite a bit better.
Stronger is just too open now the wider flagroom makes it a lot easier to cap. Plus, going through the top is a lot harder now which rids the map of the "skill trick" that made it more fun in the original version. Going through the top by yourself is still possible, it just can't be done nearly as consistently. I'm not sure why, but the trend now seems to be towards capfest maps.