You can always be heard - best place for that is:  Complaints and Suggestions
 
There seems to be many choices already in this small segment of the PC market

Well Mac isn't the only machine that use eGPU and besides I don't think people turn to Apple when it comes to gaming, with the current trends some of the top of the line laptops now don't even have discrete graphics (or only underpowered one) and more and more laptop now comes with thunderbolt 3 and soon to release USB 4.
The eGPU would goes well with their current well-known GPU/PSU lineup and maybe even throw in a NU audio card if they wanted to.
It might work on RPi in the future if it comes with USB 4 and this is why I think eGPU is a good product because virtually anything with a current Thunderbolt 3 or USB 4 can make use of it but in the case of RPi it might not be the best for gaming but might work well for other tasks such as mining or just more for more processing power.
 
And btw just want to clear things up. The reason that people might use an eGPU is NOT to replace a Desktop setup as it does not offer performance any where near desktop. It is mainly targeted towards those people with a expensive laptop (maybe for work?) and want to occasionally use it for gaming instead of spending on getting a whole Desktop setup just for gaming.

Ok, youre gonna hate me for saying this but i say no to this idea. It is a good idea although i dont think it would have a big enough market to make it worth it for the amount of people who would actually buy it and use it, but more importantly EVGA has stretched themselves into so many different product lines that it could easily undue all theyve built over the years. The thing that made them stand out from the crowd was excellent customer service, step up and the gpu/mobo lines.... along with the best group of forum regulars on this side of the internet! Ok, im tooting our horn a little, but really, they need to take care of what they have and make some decisions on what to keep and concentrate on and rid themselves of the other baggage. Lets not add more to a already ballooned catalog. Thats the kinda stuff that can sink even the best companies.

What brought me to eVGA was their VGA graphics card what kept me with them is their service. While I agree with you about expanding to another completely new market, you can say like RAM is not a good idea but if you have a look at the current eGPU market some of the company that make the enclosure is also making GPUs so they can sell them together. Since EVGA is not new to the GPUs and PSUs market the only thing I see missing now is the eGPU. Say if I wanted to get an EVGA GPU to use as an eGPU the problem is it might not fit/work well with some other enclosure that is out there on the market so I'm more likely to pick their competitor for peace of mind and so there goes a potential customer. But I guess we can wait till the market gets bigger and see how the company respond.