‘Were‘ can place emphasis on the improbability of a condition. Here’s an example of using an infinitive after ‘if it were”:
It is said that if it were to happen, everything would be history.
collocated in the NOW corpus:
1 IF IT WERE TO BE 115 most of these are followed by a past participle, a search of which are:
1 IF IT WERE TO BE IMPLEMENTED 5
2 IF IT WERE TO BE APPLIED 5
3 IF IT WERE TO BE MADE 4
4 IF IT WERE TO BE INCLUDED 3
5 IF IT WERE TO BE USED 3
2 IF IT WERE TO HAPPEN 52
3 IF IT WERE TO BECOME 14
4 IF IT WERE TO GO 14
5 IF IT WERE TO COME 12
6 IF IT WERE TO EASE 10
7 IF IT WERE TO WIN 9
8 IF IT WERE TO OCCUR 8
9 IF IT WERE TO HAVE 7
10 IF IT WERE TO MATERIALISE 6