So it’s quite likely that they will give the equivalent processor minus the “pro” features to the base model next year

Actually… that’s unlikely.

The “Pro” processors they released this year were fabricated on a brand new process that has very low yield rates and it’s likely impossible to put those chips in a high production volume product like the iPhone. The A17 Pro will probably be sold for one year in the current models, and that’ll be the end of it - they’ll never make any more.

There might be a processor with similar performance, but it won’t be this processor.