Now that you mention it kind of make sense all big team should have that facility at least at 1 or 2 and it does make sense that affect both player would be weird to see a second driver much better that the first because of that facility ai wise
but I can see how that end up flattening all ai driver value to 100 with very little difference
maybe the bonus shouldn’t be +5 per tier but +2
or maybe it should just give a temporary bonus if you schedule the usage or those facility during the week
in the case of ai it would be a roll of dice each race to see if they get the bonus of that facility or not