While I am a firm advocate of research (and could and do spend hours researching) what I really enjoy is the "design" part -bringing the look I imagine to life and recreate it exactly. Whether it's an actual extant dress or something that only exists in my head.
And I'm getting back into costuming because I enjoy it. I have a high stress "real life" job and costuming is a relaxing activity I get to indulge in a couple of evenings a week.
This time around I want to play with fabrics that please me and occasionally dress up in pretty outfits that I've made/ designed. The historical accuracy will probably vary wildly from project to project.
I will probably never completely hand sew a garment.
I will probably buy things like corsets because I can find good ones and I don't find corset making fun. (I did it for my thesis project... it's a beast and really its own art)
I will probably rip out as many seams as I sew while I'm remembering things I haven't done in years.
I may get brave and try to recreate a certain black and pink Worth dress that has remained in my head for years.
But I will have fun doing it.