I'd say that all of US90's labels referencing US98 could use a change, so edits would be worthwhile.
Bro and Mob as noted above.
US98Spa_E would look to just wanna be US98_Spa (rather than US98_Spa) by a literal reading of the manual (IE, I have ME US1 ME9_WelE wrong). But it seems that already starting an _A _B _C process back in Mobile, continuing with US98_D would be the way to go.
I10/US98_W and I10/US98_E are interesting. With the unusual intersection layout here, I'm fine with how the point coords worked out. Labels would want to be I-10/98_W and I-10/98_E, or heck, with the way the exits are split up & signed, I-10(35) I-10(35A) I-10(35B) could even work; I rather like that.