Jose, I believe that negative responses to SMF come from people taking the lazy way out, and using commercial 'just like the record' SMF's. Make your OWN SMF's (even from arranger play) and your backing can have as much individuality as your style play, and possibly more.

Use Markers to allow on the fly rearrangement of the song's structure, on the fly transposition to allow for an optional 'lift' on repeat verses and choruses, and I personally see little difference to full arranger mode. With, of course, the advantage that you have freed your LH from the tyranny of HAVING to input the chords, and gained 100% to the input that YOU make in the tune.

In all fairness, if people are being critical of machine input, playing in arranger mode actually has LESS of 'you' and more of the machine than playing two fisted over a self made SMF....