first of all, my "risk/reward" (this is a problematic term, but that's another story) is based on setup structure, for each setup (i trade index futures, mostly YM)
you can;t force a setup into an artificial risk/reward structure.
iow, some setups i risk 3 times my reward (first target. and yes, i scale out).
on others, my target is larger than my stop (but these are uncommon) etc.
i have no problem with a stop of 12, and a target of 5,9 and discretionary on third portion, if i KNOW (and I do) that the trade meets my first target before my stop 88% of the time, and then i move stop to entry, etc.
i could not care less about whether people think scaling out is "mediocre"
it is also not necessarily suboptimal on absolute basis. depends on the setups and probabilities
regardless, i trade futures for INCOME (not capital appreciation, like my investment accounts), so smooth, consistent income is important
i very rarely have losing days in my futures scalping account, and that's because I have designed it that way, to use setups with high probability, etc. to make relatively small targets
also, the NATURE of index futures is that they are usually rotating around value, not "trending" and thus this sort of strategy has better positive expectancy, at least for me and my methodology