Following on from the above, if you send HOU back to the NL where it belongs and return MIL to the AL:
Code:
NL AL
East West East West
CHN ARI BAL ANA
MIA ATL BOS CHA
NYN CIN CLE KCA
PHI COL DET MIN
PIT HOU MIL OAK
SLN LAN NYA SEA
WAS SDN TBA TEX
*exp* SFN TOR *exp*
As before, if you want you can have ATL and CIN swap divisions with CHN and SLN in the NL. The AL East is now the same as it was in 1993 but with the addition of TBA. Alternatively, you could put MIL in the AL West and the expansion team in the East.
If you want to have HOU back in the NL while keeping MIL in the league, that is trickier. If you go with historical precedent, MIL goes into the NL East (reflecting how the team was in the AL East from 1972–1993) and HOU into the NL West. The AL would get one expansion team in each division.
Code:
NL AL
East West East West
ATL ARI BAL ANA
CIN CHN BOS CHA
MIA COL CLE KCA
MIL HOU DET MIN
NYN LAN NYA OAK
PHI SDN TBA SEA
PIT SLN TOR TEX
WAS SFN *exp**exp*
ATL and CIN can swap divisions with CHN and SLN in the NL if you want.