Only half the load is good, it would seem (4)
I believe the answer is:
look
'seem' is the definition.
(I know that seem can be written as look)
'only half the load is good' is the wordplay.
'only half' suggests halving the letters.
'is good' becomes 'ok'.
'load' with half the letters taken is 'lo'.
'lo'+'ok'='LOOK'
'it would' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for look that I've seen before include "Watch, observe" , "Get an eyeful" , "See - air" , "Direct the eye to" , "Peer" .)