I've only done one Epic (2017) - am I allowed to comment? (for completeness, I have done nearly ALL the SA races in the last 14 years (some times multiple times - don't worry, won't list them all ð) . I also worked and supported on a few ACE's.
For me (disclaimer: these are my own opinions and do not translate into any fact for all at all), the Epic for the last 6+ years has seen a drastic decrease in overall value to the "general customer satisfaction" outside of the riding experience (I'll come back to this). 80% of the field is not necessarily experiencing what I personally think they could/should in SA, considering the level set by the early events, most notably Sani2c. The value proposition of the Epic is: world toughest MTB race, the Tour de France of MTB. Enter ye fools and pay a crazy premium price tag to ride "with" Nino the GOAT. Suck it up, toughen up and ride, or be spat out. F#$k the food, the comforts and extra costs - you are privileged to be here in the first place.
Before I get to the riding experience, let me state (again, only my own personal opinion), that each rider is such an individual (hence training plans copy and paste usually fail), that each individual who steps up needs to understand their own body, physique, history, propensities in actions, specific talents, adaptive qualities etc. etc. This will determine individual outcomes. There are riders in the top 250 ACE field who are very strong riders on flats and up the steepest gradients, but who still walk technical bits, or fall down switchbacks, or slow to a crawl in rock gardens. Not only due to lack of skills, but mostly due to this and then their risk/reward calculation. The further back in the field you go, the more the issues compound (preparation being equal-ish). However, you can take a life-time athlete, who has never ridden a MTB, but has a "feel" for riding, is not scared, used to possibly ride bmx as a kid, and within a good 3-6month period build him/her up to ride ACE and finish comfortably/top 300 teams. Ultimately, you can be a Mini racing in F1 race with the best tuned engine, chassis, tyres etc. - but you will be lapped many many times.
So, I think the courses have become harder, because the racing focus is on the top athletes. Less kilometers, but more climbing per kilometer (not sure about this "fact"), way more technical and challenging. And this is the most important factor for ME to ride the Epic. The challenge of the course (taking away the ridiculous entry fee). I wasn't keen to ride this year (couldn't afford it anyway), because I knew most stages intimately (Durbanville Hills, Paarl). But if a spare, free ticket cropped up, guess who would be on the start line?
Anyway, my overall point is: the Epic is not for everyone. Most riders (mostly international) do not really know what they are getting themselves into. TIA. It is even harder for them, despite decent talent and preparation. For us poor locals (in all respects), we need to decide if we are looking for an ultimate challenge. Because, in my opinion, you do the Epic to "race". And here I mean, race yourself within the limitations of yourself or your partner. This needs to be your best performance, how well can you ride, how quick can you finish (all within reason of course). The Epic is surely not a participation event. Not for that price tag, and the REAL prospect of great harm possibly coming to your body (excluding death - nobody signs up for that!).
There are so many great events, who prioritise the gees, great rider experience, more "chilled" routes, better tent villages, food, limitless drinks (although that might have disappeared forever) etc. etc. - that is more for the mainstream rider.
Final disclaimer: this does NOT absolve the ACE of such poor organisation, off-bike experience, lack of interest of the sub-elite level rider etc. (see previous post of mine). But it is a clear "maximising for profit" event. Accept it and deal with it.
Forgot what my point was ð