LazyBoxer was ORIGINALLY written as an alternative to LazyRaider, Tyrael, RaidBot, CombatBot but it evolved into what you see now, a fully featured RAF tool. True it still can be used as a replacement for the raid bot but I guess there are only a few people doing this.
The idea behind LazyBoxer SL is that is the only purpose for the botbase and the only options available are for that specific job. As for performance, its likely to be a few milliseconds more responsive.
What is a few milliseconds compared to a game that runs at ~30fps?
Like I said originally the few hours would be spent better on Joe.
But u would still help in your testing phase, should you decide to proceed.