Sparkly, I do want to say that I think it is great that you have found a community in which you can be comfortable and be an Eved Hashem and grow at your own pace. However, you do have to be careful about making comments which imply that one does not HAVE TO keep certain Halachos.
It is also important for you to realize that calling oneself Modern Orthodox does not change one’s obligations. If something is assur, it is assur whether or not you call yourself MO. If it is muttar, it is muttar whether or not you call yourself MO. Not being shomer negiah is assur even if you are MO. Talking to members of the opposite gender in certain circumstances is muttar even if you don’t call yourself MO. The label you give yourself does not change the halacha.
Also, you have to be careful about deciding on the importance of Mitzvos based on what PEOPLE commonly do. It is very common for people to keep everything but hilchos tznius. This does not meant that tznius is any less important than any other Mitzva. It simply means that it is harder for most people to keep.
We have to be careful about deciding things based on what is accepted societally. The fact that tznius and negiah are ignored does not make them unimportant; it just means that they are difficult. We don’t decide how important something is by how difficult it is or how widely- kept it is. If you want to say that these things are hard, say that they are hard, but do not say that they are not important.