Nice work!
Add small button to set value to default (for most fields), add ms/seconds/minutes after value where appropriate.
Maybe put the Min/Max fields in columns, align values to right if possible, also Alien/Human values in columns:
Rate Ping snapshots
Min 5000 0 10
Max 25000 250
Alien Human
Buildpoints 100 100
Max stage 3 3
S2 Threshold etc
Possibly add:
sv_dlURL
g_speed, g_knockback, g_antispawnblock, g_dretchpunt, g_allowShare
g_friendlyFireMovementAttacks, g_friendlyBuildableFire, g_friendlyFireHumans, g_friendlyFireAliens,
g_warmup, g_dowarmup (not sure this 1 is needed),
g_voteLimit, g_voteMinTime, g_mapvoteMaxTime,
(not sure if all those work on all qvms or if they can even be set from server.cfg (tho I don't see why not)).
Move SD time above timelimit.
If possible, display the output side by side with controls so people will actually learn it.