You seem to want to confuse this thread. I advise you to read again what I wrote.
Ok I will gladly get serious with you. Pioneers, as a unit, is a pretty useless one. It's not squishy, and if you don't upgrade with Flamer it's combat useless.
Its only upsides are in support roles: laying mines, barbed wire and seeing further than purely combat units in order to assist with target marking. That's a good thing, and it ties perfectly to pioneers design philosophy.
I think it needs no change whatsoever. Those kind of topics are really cringe imho, since you are literally picking and examining mechanisms that have been in place for almost a decade.