First thing I noticed, is how some people use the word "love" whenever they talk about jiujitsu in general. I mean these guys won't say I like jiujitsu. They'll say I LOVE jiujitsu. They won't say I like to do this technique like this and like that. What they will say is, I LOVE to do it like this, while grinning with sparkly eyes. There's a point in someone's career when they stop liking jiujitsu, it becomes a passion. The rest of the people might end up quitting around the way, sadly, unless they have some other strong reason to keep on course.
I am very fortunate to be part of an ever-growing school where I am constantly exposed to different styles and ideas. There is no uniform mind-set here. Some people are born warriors, with huge hearts, others are incredibly technical and patient, and some are both. We have people who play inverted, deep half, DLR, spider, you name it. Prof Bruno can use his x-guard occasionally to fill the void, however.
On a personal level, I've found that transitioning to deep half is effortless when I can't play spider guard anymore, and it's a bit too late anyway. I can always try a sweep, maybe fail, but at least get back to open guard after the ensuing scramble, or back to deep half. The thing to look out for in deep half, are kimuras, collar chokes (but they don't seem to be that threatening), and the persons slipping out the other way. Control those few, and you'll be golden. I am actually grateful to both prof. Bruno and Didier for teaching me proper hand placement when playing deep half. Fooled with that position for a bit, but I need to work it some more to get consistent about it.