I am really digging this thread.
If it is OK with everyone, I would like to take a bit of a different approach to this topic..
If you find your wine lacking, determine what exactly it is that you do not like and improve upon it next time. There is always a lesson to learn and something that can be done differently to improve your future winemaking process.
It is all a matter of the choices you make.
If you end up with inferior grapes, then choose a different variety or, perhaps, a different supplier next time. If you think your wine is flat, then, perhaps adjust the amount, type, and exposure to oak, or even the duration of the maceration process. How about doing acid trials? (if you are not already doing so). There are literally hundreds of decisions to make throughout the wine making process.
I really hope that this does not offend anyone, but if you do not like the wine you make, then do something about it. Change your process and/or decisions that you make to improve you wine in the future. Matticulous record keeping will help you in doing this.
I took me years to get to the point where I love my wine. Now, I can compare most of my varietals to much more expensive wines. Just recently (at pressing) we started off with a Stag's Leap Artemis (a $50 bottle) and found it much less preferable to all of our 2016 vintages.
Heck, a year ago we did a blind taste test between my Tuscan blend and an $80 bottle of Brunello. The wine steward tasted both and actually chose mine as the expensive bottle. Nope, this wine costs $4.31 (including cork and bottle).
Also, cellar pallet is real. Make it a point to drink a variety of different wines from a variety of different sources. Go winery hopping every now and then!
Winemaking is a journey to the perfect bottle of wine and the growth of talent along the way.
Ok, Getting off the soapbox now...