It opens up more weapon choices, for one thing, and it keeps those annoying rapier and scimitar builds away from rogues. As far as damage goes the loss of the d8 is only a single point on average... big loss (not). shrug
All that helps in my book.![]()
It adds a few and takes a few away. It removes the whip (which is a pretty nice rogue weapon), it removes the rapier (which apparently you don't like). It adds a few pretty d4 or d6 weapons, the only one of which that really adds anything is the hand axe (and I do love the hand axe in 5e).
Despite what you've said, it does nothing to stop rogues using scimitars, which are both light and finesse.
Basically, this sounds to me like one of those odd house rules (and we've probably all done something like it) that is designed to promote (probably not very accurately, see above ;-)) some internal feeling for what something "should" be. There's no problem with that, and while I don't much like it I guarantee I've done worse at some point. The only issue I have is that you presented it as "helping" the concept of the STR-based rogue, and... I just can't see how it does that. Promotes what you think might be the 'right' way to do it, maybe, but it's a very minor nerf, so I can't see it as helpful. A helpful houserule would, perhaps, embrace the power of 'and' (which probably wouldn't break things, but (very personally) I don't think it's actually needed).