You are right, gameplay must come first, but I feel like this is all about what reone can do and it is able to do incredible things. If this was only about gameplay, we wouldn't need reone. We are already able to play the game just fine. Showcasing some of the graphic capabilities going forward should be one of the priorities. I mean, sure, it is open source, but unless you or someone else capable pave the way, it will not succeed as much as it could. Granted, there are many fans of Kotor capable of doing things like these, but how many of them do you think even heard of Reone so far?
A few small improvements such as these is a must, no? There is a reason why people expect things like real time combat from reone. Original feels too clunky to play these days.
Changing vanilla behavior is one thing, what we are talking about is small improvements over the original. Just look at the last good Bioware game, Dragon Age Origins which uses basically the same engine (well, same underlying codebase anyhow), even original devs noticed many of the shortcomings of their engine and improved upon them and added many of the features that the original engine was sorely missing. A feature toggle for improved vs original would be amazing.