To be fair, a lot of what you mention is personal point view, for example ladders and swimming for my are the lowest priority items that could be put into gameguru, that's my personal point if view, some will share it, others won't. This is why we have the community vote for features, everybody gets to vote from a long list of features, and as each one is completed the highest voted feature will be worked on, then the votes are reset and everybody gets to vote on the next one.
Better AI i totally agree is high priority, although the AI is actually pretty good when it's working, unfortunately there's a ton of bugs that have been introduced recently and it needs a serious bug fix, so this isn't really something that needs a feature request.
As to graphic, i keep seeing people mention this, and granted it doesn't produce AAA quality graphics, but a lot of people are simply misinformed about the graphics quality, and how it works.
There are two main things that are involved with graphics, the shaders, and models.
The shaders used in GameGuru are actually fairly good, again not AAA, but pretty good and you can get some pretty good effects out of them.
The biggest thing that effects the graphics quality is models, if your model is low quality then your graphics will be low quality no matter how good your shaders are, but if you have really good models you can actually produce some stunning scenes with gameguru, i've seen some amazing graphics come out of this engine.
The problem is, and this is what i mean about misinformed users, in Unity/Unreal you don't get free models in the base software, you have to download community crated models, or buy models from 3rd parties, and there's a fairly high level of quality in those community and 3rd party models, whereas with GameGuru a lot of free models are supplied, which although aren't complete rubbish, aren't as good quality as ones you would buy from a third party, because these are readily available people make a quick game using them and then compare them to Unity, thus thinking the graphics are really bad, when in reality if they had used the same models from their Unity project in GameGuru they would have gotten a much better graphical result than they did using the stock models.
I admit there are improvements that can be made, and one of them is being worked on right now, the DX11 upgrade, which won't improve graphics directly at first, but will open up the engine for new graphical features such as PBR and FBX support, but what i'm trying to say is that it's not as bad at the moment as some people seem to think.
i7 7700,k NV1070 8GB, 16GB 3200mhz memory, 1x 2TB Hybrid, Win10.
i5 4760k, NV960 2GB, 16GB 2333mhz memory, 1x 2TB Hybrid, Win10.
i3, Intel 4000 series graphics, 6GB memory, 1x 500gb HDD, Win8.1.