Those Jacksonville uniforms are wonderfully 90s, and I think it works for an expansion team from that era (See Miami, Tampa, Arizona). I agree with the others that the logo doesn't quite work though. The detailed, illustrated style with that font looks more 70s than 90s. I'd take a look at a lot of logos from 90s expansion teams across all sports to get an idea of the distinct style from that era.
I think your updated Seattle logo is a HUGE upgrade, and I like the look of the drop shadows and lime green. I loved the simple green and white as well though, so you could really go either way.