Nobelium wrotes:
Truncating before entering the data into database (some feeds entries can be huge) would be very useful.

And, more importantly, some RSS feed providers request you only show a portion of their feed to be fair to them. I respect that. While others encourage full feed display and sometimes include ads to help their bottom line.

So, some feeds you need to be truncated, others not. Thus the need to truncate them before you display them. Changing the template truncates ALL the feed entries the same.