I don't think anyone was trying to imply you suck, but it's easy to sit back unattached from something and find little changes that could be made,... I'm sure we all know it's more difficult to do that day in and out, especially if it's not even where your livelihood comes from.
As far as the code changes... I'm betting you could find people here on ECF willing to do little changes here and there just to help out, I doubt you will find someone willing to revamp or overhaul it, but sometimes just little things make a difference.
You could sure throw a small contest related to this...
Well.. blame people not making good ones and those of us that have basically given up on coffee flavored vape... I'll accept blame as someone who has basically given up on vaping coffee flavors... I have a bottle of Sumatra and just a couple others to try again now that they have aged,... but I have no intention of buying any more for quite a while. Really, I shouldn't be buying any juice for a while given how much backlogged 3rd party juice I have on top of my DIY.
Speaking of contests... you could try to get the coffee flavors moving by using them as the prize in the above mentioned contest. I see people on here spend way too much time on contests with very little reward. i.e., many posts per day just for 30mL, etc.
Either way, these are just my thoughts and they have likely NOT been properly filtered and they sure haven't been distilled.
And I feel like my contests are extremely generous because I don't want anyone to waste their time-I do know how that feels 
