While this a is a clever and quirky "outside the box thinking" solution, that does seem to work well, I don't see the point in any feed rate limiter.

My 6 x 4 bandsaw (probably the same factory different "brand"), has worked well for the last 8 years or so. I wound the spring tensioner to "limit" the feed rate (support the weight), but this spring has almost no effect on the feed rate. The weight of the whole mechanism is quite heavy but I consider some of the weight is supported by the spring.

So, for the last 8 years, I just place the blade on the material and let it cut. Provided I have my blade guides adjusted correctly I always get a straight cut.

Generally speaking, the bandsaw cut does not have to be that accurate as the cut usually precedes further machining or other processing (welding etc.).

Consider the use of the hand held hacksaw. Does the user work with "light" cuts? Unless there are "special cutting needs", normally no. The user usually "leans in to it" to make the cut. (Please don't take this statement too literally).

The user presses down quite firmly while cutting and this is what I allow my bandsaw to do. Eight years ago after fiddling with the spring tensioner, with no appreciable variation, I just let the bandsaw do its thing. I get quick and accurate cuts at the maximum speed the material allows. Cutting 1.6mm (1/16th inch) wall thickness stainless square tubing proceeds very quickly with no damage to the blade, no ripped off teeth etc.

A great idea Rick, for those that have the need.