It might be "making it easier" but anything outside 25nm is outside the area Flight Checked for the Localiser. It's not uncommon for LOC's to be fairly poor outside 25nm depending on terrain etc etc
Up until last year a major UK Airport was regularly establishing a/c on the Glideslope outside the Flight Checked range....once it was noticed by the appropriate people it was stopped until the GS could be checked at the extended range. I would suggest this should be the same for a LOC, don't use it outwith the promulgated range.