You are almost always a less competitive applicant as a reapplicant, even if you've done a prelim or TY - you're a year out from your SLOEs and most of your prelim/TY doesn't count toward your EM residency (with exception of a few off service months). The exception to this is that if you applied too narrowly (either geographically or "more competitive" programs), you might have a better chance of matching with a broader application the second time around.
That said, two things:
1) it's early - just because you haven't had interviews yet doesn't mean they won't be forthcoming
2) it's early - you can broaden your application now and still be early enough to be ahead of most program's deadlines. If you feel like you might not have applied broadly enough, you should expand your application to include a broader number of programs - especially less competitive or geographically less desired programs. If you have good letters and scores and no red flags, you should match, but it is absolutely worth spending an extra $1k+ on applications to save yourself a year and applying as a less competitive applicant the second time around. You can always turn down interviews later!
I would not bank on having better success in your application after another year - again, it's extremely rare that someone becomes a more competitive applicant the second time around, and it's 10x harder to go through ERAS and the interview season as an intern than it is as a 4th year med student.