To be honest, I'd rather see MLB shrink to 28 teams (4 divisions of 7.) It won't ever happen, but baseball would be better with 28.
32 teams does make for an easier playoff format, with 4 division winners and 4 WC per league, but I hope they don't hand the division winners the home field.
I might prefer 4 divisions of 8 over 8 divisions of 4, but that won't happen. If no teams switch leagues, maybe the 8 divisions might look like this:
AL
BOS, NYY, BAL, TOR
DET, CLE, CWS, MIN
TBR, KCR, HOU, TEX
SEA, SAC, LAA, LV
NL
NYM, PHI, WSH PIT
ATL, MIA, NC, STL
CIN, MIL, CHC, COL
SFG, LAD, SDP, AZ
I'd swap a few NL-AL teams into this:
AL
BOS, NYY, BAL, WSH
MIA, TBR, HOU, TEX
TOR, CLE, DET, CIN
SEA, LAA, LV, SAC
NL
NYM, PHI, PIT, NC
ATL, STL, KCR, COL
CHC, CWS, MIL, MIN
SFG, LAD, SDP, AZ
Go total Geographic:
TOR, BOS, NYY, NYM
PHI, PIT, WSH, BAL
NC, ATL, TBR, MIA
DET, CLE, CIN, INDY
MIN, MIL, CWS, CHC
KCR, STL, TEX, HOU
SEA, SFG, LV, COL
LAD, LAA, SDP, AZ
Wouldn't 4 divisions of 8 make things neater?
TOR, BOS, NYY, NYM, PHI, PIT, BAL, WSH
NC, ATL, TBR, MIA, KCR, STL, TEX, HOU
DET, CLE, CIN, CHC, CWS, MIL, MIN, COL
LV, AZ, SEA, SFG, SAC, LAD, LAA, SDP