I don't think you ever need to remove wax honestly. I think some of you guys do way too much to your shoes and will see adverse effects sooner rather than later. If you don't apply wax directly to the vamps of your shoes, or do so sparingly (~2 times per year) there is no need to strip your shoes. Brushing in between wearings is 90% of what you should be doing. 5% should be applying conditioner to the vamps, and the other 5% is condition and polish.
I'm sorry but I have to disagree with certain aspects of your statement, but I agree with the general sentiment that less is better than more in the case of wax.
1) Wax should be removed periodically simply because it becomes more and more clogged with foreign particles (dust, dirt, acids, salt, etc..) over time. It is part of the nature of wax to stick to things (it is sticking to your shoe leather for example). Wiping dirt off of your shoes also pushes a very small percentage of that dirt into the wax, unless you are wiping hard enough to remove a layer or two of wax.
2) I haven't seen an adverse effect from my shoe care regiment either sooner, or later. I consider my shoe care regiment as rather aggressive for the wear/exposure my shoes get, but it works well for me. These shoes are around 15 years old:
3) Both cream and paste polish contain wax. If you are suggesting that only conditioner be used on the vamp it won't be long before you will not be able to get even a brush shine on the vamp of your shoe. If you have a picture of a shoe where you have never used polish (paste or cream) but have only used conditioner on the vamp over time, and it still has a brush shine, please post it. You did say that it was accetable to add wax sparingly to the vamp, which I agree with. There should just be enough wax there (using cream polish) to keep a brush shine (I have gone beyond that at times however).
4) I usually dry brush my shoes (and rub a moist cloth over the toe and heel counter if they have a spit shine) before I put then on. I usually wear a pair of shoes 3 to 4 times before they fall into my calendar shoe care regiment. So I agree that you should not be adding wax the majority of the time. However my shoes do get cleaned and repolished about every 3 or 4 wears which I think is probably not nessessary, but I enjoy the process and it seems to keep the shoes in great shape. I could probably get away with doing it half as often and it would still be fine.